quickfix printfs

* first iteration rewriting the update logic

* formatting fixes

* Added an option to have compose up only target the specific container.
Used with either -F flag, config variable or label.

* Skipping update check on non-compose containers unless option is set

* Versionbump
Added new info and upped the version number.

.gitignore

@@ -0,0 +1,7 @@
+# ignore users custom notify.sh
+/notify.sh
+/urls.list
+# ignore user config
+/dockcheck.config
+# ignore the auto-installed regctl
+regctl

.pre-commit-config.yaml

@@ -0,0 +1,11 @@
+repos:
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.6.0
+  hooks:
+    - id: check-yaml
+    - id: check-added-large-files
+    - id: trailing-whitespace
+      args: [--markdown-linebreak-ext=md]
+    - id: end-of-file-fixer
+    - id: mixed-line-ending
+      args: ['--fix=lf']

LICENSE

@@ -0,0 +1,674 @@
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+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,31 +1,79 @@
-# dockcheck
+<p align="center">
-### A script checking updates for docker images **without the need of pulling** - then optionally auto-update chosen containers. 
+  <img src="extras/dockcheck_logo_by_booYah187.png" width="160" title="dockcheck">
+</p>
+<p align="center">
+  <img src="https://img.shields.io/badge/bash-4.3-green?style=flat-square&logo=gnubash" alt="bash">
+  <a href="https://www.gnu.org/licenses/gpl-3.0.html"><img src="https://img.shields.io/badge/license-GPLv3-red?style=flat-square" alt="GPLv3"></a>
+  <img src="https://img.shields.io/github/v/tag/mag37/dockcheck?style=flat-square&label=release" alt="release">
+  <a href="https://ko-fi.com/mag37"><img src="https://img.shields.io/badge/-Ko--fi-grey?style=flat-square&logo=Ko-fi" alt="Buy me a Coffee"></a>
+  <a href="https://liberapay.com/user-bin-rob/donate"><img src="https://img.shields.io/badge/-LiberaPay-grey?style=flat-square&logo=liberapay" alt="LiberaPay"></a>
+  <a href="https://github.com/sponsors/mag37"><img src="https://img.shields.io/badge/-Sponsor-grey?style=flat-square&logo=github" alt="Github Sponsor"></a>
+</p>
 
-With the help of [`regctl`](https://github.com/regclient/regclient). This is just a concept for inspiration, use with care.
+<h2 align="center">CLI tool to automate docker image updates or notifying when updates are available.</h2>
+<h3 align="center">selective updates, exclude containers, custom labels, notification plugins, prune when done etc.</h3>
+
+<h4 align="center">:whale: Docker Hub pull limit :chart_with_downwards_trend: not an issue for checks but for actual pulls - <a href="#whale-docker-hub-pull-limit-chart_with_downwards_trend-not-an-issue-for-checks-but-for-actual-pulls">read more</a></h4>
+
+<h5 align="center">For Podman - see the fork <a href="https://github.com/sudo-kraken/podcheck">sudo-kraken/podcheck</a>!</h4>
+
+___
+## :bell: Changelog
+
+- **v0.6.4**: Restructured the update process - first pulls all updates, then recreates all containers.
+    - Added logic to skip update check on non-compose containers (unless `-r` option).
+    - Added option `-F` to revert to `compose up -d <ContainerName>` targeting specific container and not the stack.
+        - Also added corresponding label and config-option.
+    - Added markdown formatting to `notify_ntfy-sh.sh` template.
+- **v0.6.3**: Some fixes and changes:
+    - Stops when a container recreation (compose up -d) fails, also `up`s the whole stack now.
+    - `-M`, Markdown format url-releasenotes in notification (requires template rework, look at gotify!)
+    - Added [addons/DSM/README.md](./addons/DSM/README.md) for more info Synology DSM info.
+    - Permission checks - graceful exit if no docker permissions + checking if root for pkg-manager.
+- **v0.6.2**: Style and colour changes, prometheus hotfix, new options:
+    - `-u`, Allow auto self update of dockcheck.sh
+    - `-I`, Print container release URLs in the CLI "choose update" list. (please contribute to `urls.list`)
+    - Extras: `-m`, Monochrome mode now hides the progress bar.
+- **v0.6.1**: Hotfixes: (try removing set+shopt+shopt if debugging more errors)
+    - xargs/pipefail, removed `-set -e` bash option for now.
+    - unbound variables fixed (hopefully)
+    - dependency installer from pkgmanager rewritten
 ___
 
-## Dependencies:
+
-Running docker (duh) and compose, either standalone or plugin.   
+![](extras/example.gif)
-`regctl` by [regclient](https://github.com/regclient/regclient) (will ask to download `regctl` if not in `PATH` or `PWD`)
+
-___
+## :mag_right: `dockcheck.sh`
-## `dockcheck.sh`
+```
-```bash
 $ ./dockcheck.sh -h
 Syntax:     dockcheck.sh [OPTION] [part of name to filter]
-Example:    dockcheck.sh -a ng
+Example:    dockcheck.sh -y -x 10 -d 10 -e nextcloud,heimdall
 
 Options:
--h     Print this Help.
 -a|y   Automatic updates, without interaction.
+-c D   Exports metrics as prom file for the prometheus node_exporter. Provide the collector textfile directory.
+-d N   Only update to new images that are N+ days old. Lists too recent with +prefix and age. 2xSlower.
+-e X   Exclude containers, separated by comma.
+-f     Force stop+start stack after update. Caution: restarts once for every updated container within stack.
+-F     Only compose up the specific container, not the whole compose stack (useful for master-compose structure).
+-h     Print this Help.
+-i     Inform - send a preconfigured notification.
+-I     Prints custom releasenote urls alongside each container with updates (requires urls.list).
+-l     Only update if label is set. See readme.
+-m     Monochrome mode, no printf colour codes and hides progress bar.
+-M     Prints custom releasenote urls as markdown (requires template support).
 -n     No updates, only checking availability.
+-p     Auto-Prune dangling images after update.
+-r     Allow updating images for docker run, wont update the container.
+-s     Include stopped containers in the check. (Logic: docker ps -a).
+-t N   Set a timeout (in seconds) per container for registry checkups, 10 is default.
+-u     Allow automatic self updates - caution as this will pull new code and autorun it.
+-v     Prints current version.
+-x N   Set max asynchronous subprocesses, 1 default, 0 to disable, 32+ tested.
 ```
 
-
+### Basic example:
-
+```
-![](https://github.com/mag37/dockcheck/blob/main/example.gif)
-
-Basic example:
-```bash
 $ ./dockcheck.sh
 . . .
 Containers on latest version:
@@ -33,69 +81,199 @@ glances
 homer
 
 Containers with updates available:
-0) ALL
 1) adguardhome
 2) syncthing
 3) whoogle-search
 
-
+Choose what containers to update:
-Do you want to update? y/[n] y
+Enter number(s) separated by comma, [a] for all - [q] to quit:
-What containers do you like to update? 
-Enter number(s) separated by comma: 1,3
-
 ```
-Then it proceedes to run `pull` and `up -d` on every container with updates.   
+Then it proceeds to run `pull` and `up -d` on every container with updates.  
+After the updates are complete, you'll get prompted if you'd like to prune dangling images.
+
+___
+
+## :nut_and_bolt: Dependencies
+- Running docker (duh) and compose, either standalone or plugin. (see [Podman fork](https://github.com/sudo-kraken/podcheck)  
+- Bash shell or compatible shell of at least v4.3
+  - POSIX `xargs`, usually default but can be installed with the `findutils` package - to enable async.
+- [jq](https://github.com/jqlang/jq)
+  - User will be prompted to install with package manager or download static binary.
+- [regclient/regctl](https://github.com/regclient/regclient) (Licensed under [Apache-2.0 License](http://www.apache.org/licenses/LICENSE-2.0))  
+  - User will be prompted to download `regctl` if not in `PATH` or `PWD`.  
+  - regctl requires `amd64/arm64` - see [workaround](#roller_coaster-workaround-for-non-amd64--arm64) if other architecture is used.
+
+## :tent: Install Instructions
+Download the script to a directory in **PATH**, I'd suggest using `~/.local/bin` as that's usually in **PATH**.  
+For OSX/macOS preferably use `/usr/local/bin`.
+```sh
+# basic example with curl:
+curl -L https://raw.githubusercontent.com/mag37/dockcheck/main/dockcheck.sh -o ~/.local/bin/dockcheck.sh
+chmod +x ~/.local/bin/dockcheck.sh
+
+# or oneliner with wget:
+wget -O ~/.local/bin/dockcheck.sh "https://raw.githubusercontent.com/mag37/dockcheck/main/dockcheck.sh" && chmod +x ~/.local/bin/dockcheck.sh
+
+# OSX or macOS version with curl:
+ curl -L https://raw.githubusercontent.com/mag37/dockcheck/main/dockcheck.sh -o /usr/local/bin/dockcheck.sh && chmod +x /usr/local/bin/dockcheck.sh
+```
+Then call the script anywhere with just `dockcheck.sh`.
+Add preferred `notify.sh`-template to the same directory - this will not be touched by the scripts self-update function.
+
+## :handbag: Configuration
+To modify settings and have them persist through updates - copy the `default.config` to `dockcheck.config` alongside the script or in `~/.config/`.  
+Alternatively create an alias where specific flags and values are set.  
+Example `alias dc=dockcheck.sh -p -x 10 -t 3`.
+
+## :loudspeaker: Notifications
+Trigger with the `-i` flag if `notify.sh` is present and configured.  
+Will send a list of containers with updates available and a notification when `dockcheck.sh` itself has an update.  
+Run it scheduled with `-ni` to only get notified when there's updates available!  
+
+Use a `notify_X.sh` template file from the **notify_templates** directory, copy it to `notify.sh` alongside the script, modify it to your needs! (notify.sh is added to .gitignore)  
+**Current templates:**
+- Synology [DSM](https://www.synology.com/en-global/dsm)
+- Email with [mSMTP](https://wiki.debian.org/msmtp) (or deprecated alternative [sSMTP](https://wiki.debian.org/sSMTP))
+- Apprise (with it's [multitude](https://github.com/caronc/apprise#supported-notifications) of notifications)
+  - both native [caronc/apprise](https://github.com/caronc/apprise) and the standalone [linuxserver/docker-apprise-api](https://github.com/linuxserver/docker-apprise-api)
+  - Read the [QuickStart](extras/apprise_quickstart.md)
+- [ntfy.sh](https://ntfy.sh/) - HTTP-based pub-sub notifications.
+- [Gotify](https://gotify.net/) - a simple server for sending and receiving messages.
+- [Pushbullet](https://www.pushbullet.com/) - connecting different devices with cross-platform features.
+- [Telegram](https://telegram.org/) - Telegram chat API.
+- [Matrix-Synapse](https://github.com/element-hq/synapse) - [Matrix](https://matrix.org/), open, secure, decentralised communication.
+- [Pushover](https://pushover.net/) - Simple Notifications (to your phone, wearables, desktops)
+- [Discord](https://support.discord.com/hc/en-us/articles/228383668-Intro-to-Webhooks) - Discord webhooks.
+- [Slack](https://api.slack.com/tutorials/tracks/posting-messages-with-curl) - Slack curl api
+
+Further additions are welcome - suggestions or PR!  
+<sub><sup>Initiated and first contributed by [yoyoma2](https://github.com/yoyoma2).</sup></sub>  
+
+### :date: Release notes addon
+There's a function to use a lookup-file to add release note URL's to the notification message.  
+Copy the notify_templates/`urls.list` file to the script directory, it will be used automatically if it's there.  
+Modify it as necessary, the names of interest in the left column needs to match your container names.  
+To also list the URL's in the CLI output (choose containers list) use the `-I` option or variable config.  
+For Markdown formatting also add the `-M` option. (**this requires the template to be compatible - see gotify for example**)  
+
+The output of the notification will look something like this:
+```
+Containers on hostname with updates available:
+apprise-api  ->  https://github.com/linuxserver/docker-apprise-api/releases
+homer  ->  https://github.com/bastienwirtz/homer/releases
+nginx  ->  https://github.com/docker-library/official-images/blob/master/library/nginx
+...
+```
+The `urls.list` file is just an example and I'd gladly see that people contribute back when they add their preferred URLs to their lists.
+
+## :fast_forward: Asyncronous update checks with **xargs**; `-x N` option. (default=1)
+Pass `-x N` where N is number of subprocesses allowed, experiment in your environment to find a suitable max!  
+Change the default value by editing the `MaxAsync=N` variable in `dockcheck.sh`. To disable the subprocess function set `MaxAsync=0`.
 
 
+## :chart_with_upwards_trend: Extra plugins and tools:
 
-And with `-n` *No updates* and `gl` for `*gl*` filtering:
+### :small_orange_diamond: Using dockcheck.sh with the Synology DSM
-```bash
+If you run your container through the *Container Manager GUI* - only notifications are supported.  
-$ ./dockcheck.sh -n gl
+While if running manual (vanilla docker compose CLI) will allow you to use the update function too.  
-. . .
+Some extra setup to tie together with Synology DSM - check out the [addons/DSM/README.md](./addons/DSM/README.md).
-Containers with updates available:
-whoogle-search
 
-Containers on latest version:
+### :small_orange_diamond: Prometheus and node_exporter
-glances
+Dockcheck can be used together with [Prometheus](https://github.com/prometheus/prometheus) and [node_exporter](https://github.com/prometheus/node_exporter) to export metrics via the file collector, scheduled with cron or likely.
-
+This is done with the `-c` option, like this:
-No updates installed, exiting
+```
+dockcheck.sh -c /path/to/exporter/directory
 ```
 
-### :beetle: Squashed Bugs:
+See the [README.md](./addons/prometheus/README.md) for more detailed information on how to set it up!  
-- ~~No options for running without updates or auto update.~~
+<sub><sup>Contributed by [tdralle](https://github.com/tdralle).</sup></sub>  
-- ~~No filter to check only specific containers.~~
-- ~~Faulty registry checkups stopped the updates completely.~~
-- ~~No clear checks to skip containers producing errors.~~
-- ~~Multi-digest images didn't correctly check with registry, giving false positives on updates.~~
-- ~~Not working with filenames other than `docker-compose.yml`~~
-- ~~Lists are not alphabetically sorted (due to stacks and other parameters)~~
-- ~~Old `docker-compose` binary-check sometimes returned false error~~
-- ~~Stacks gets updated as whole, even if only one service is chosen.~~
 
-### :hammer: Known issues
+### :small_orange_diamond: Zabbix config to monitor docker image updates
-- ~~No granular choice of what to update (except initial name filter).~~
+If you already use Zabbix - this config will Shows number of available docker image updates on host.  
-- No detailed error feedback (just skip + list what's skipped) .
+Example: *2 Docker Image updates on host-xyz*  
+See project: [thetorminal/zabbix-docker-image-updates](https://github.com/thetorminal/zabbix-docker-image-updates)
 
-## `dockcheck_docker-run_ver.sh`
+### :small_orange_diamond: Serve REST API to list all available updates
-### Wont auto-update the containers, only their images. (compose is recommended)
+A custom python script to serve a REST API to get pulled into other monitoring tools like [homepage](https://github.com/gethomepage/homepage).  
-Alternative version for people who use `docker run` and no composes.   
+See [discussion here](https://github.com/mag37/dockcheck/discussions/146).
+
+### :small_orange_diamond: Wrapper Script for Unraid's User Scripts
+A custom bash wrapper script to allow the usage of dockcheck as a Unraid User Script plugin.  
+See [discussion here](https://github.com/mag37/dockcheck/discussions/145).
+
+## :bookmark: Labels
+Optionally add labels to compose-files. Currently these are the usable labels:
+```
+    labels:
+      mag37.dockcheck.update: true
+      mag37.dockcheck.only-specific-container: true
+      mag37.dockcheck.restart-stack: true
+```
+- `mag37.dockcheck.update: true` will when used with the `-l` option only update containers with this label and skip the rest. Will still list updates as usual.
+- `mag37.dockcheck.only-specific-container: true` works instead of the `-F` option, specifying the updated container when doing compose up, like `docker compose up -d homer`.
+- `mag37.dockcheck.restart-stack: true` works instead of the `-f` option, forcing stop+restart on the whole compose-stack (Caution: Will restart on every updated container within stack).
+
+## :roller_coaster: Workaround for non **amd64** / **arm64**
+`regctl` provides binaries for amd64/arm64, to use on other architecture you could try this workaround.
+Run regctl in a container wrapped in a shell script. Copied from [regclient/docs/install.md](https://github.com/regclient/regclient/blob/main/docs/install.md):
+
+```sh
+cat >regctl <<EOF
+#!/bin/sh
+opts=""
+case "\$*" in
+  "registry login"*) opts="-t";;
+esac
+docker container run \$opts -i --rm --net host \\
+  -u "\$(id -u):\$(id -g)" -e HOME -v \$HOME:\$HOME \\
+  -v /etc/docker/certs.d:/etc/docker/certs.d:ro \\
+  ghcr.io/regclient/regctl:latest "\$@"
+EOF
+chmod 755 regctl
+```
+Test it with `./regctl --help` and then either add the file to the same path as *dockcheck.sh* or in your path (eg. `~/.local/bin/regctl`).
+
+## :whale: Docker Hub pull limit :chart_with_downwards_trend: not an issue for checks but for actual pulls
+Due to recent changes in [Docker Hub usage and limits](https://docs.docker.com/docker-hub/usage/)
+>Unauthenticated users: 10 pulls/hour  
+>Authenticated users with a free account: 100 pulls/hour
+
+This is not an issue for registry checks. But if you have a large stack and pull more than 10 updates at once consider updating more often or to create a free account.
+You could use/modify the login-wrapper function in the example below to automate the login prior to running `dockcheck.sh`.
+
+### :guardsman: Function to auth with docker hub before running
+**Example** - Change names, paths, and remove cat+password flag if you rather get prompted:
+```sh
+function dchk {
+  cat ~/pwd.txt | docker login --username YourUser --password-stdin
+  ~/dockcheck.sh "$@"
+}
+```
+
+## :hammer: Known issues
+- No detailed error feedback (just skip + list what's skipped).
+- Not respecting `--profile` options when re-creating the container.
+- Not working well with containers created by **Portainer**.
+- **Watchtower** might cause issues due to retagging images when checking for updates (and thereby pulling new images).
+
+## :warning: `-r flag` disclaimer and warning
+**Wont auto-update the containers, only their images. (compose is recommended)**  
 `docker run` dont support using new images just by restarting a container.  
-Containers need to be stopped, removed and created again to run on the new image.
+Containers need to be manually stopped, removed and created again to run on the new image.
 
+## :wrench: Debugging
+If you hit issues, you could check the output of the `extras/errorCheck.sh` script for clues.
+Another option is to run the main script with debugging in a subshell `bash -x dockcheck.sh` - if there's a particular container/image that's causing issues you can filter for just that through `bash -x dockcheck.sh nginx`.
 
-## `dupc_function.sh`
+## :scroll: License
-Function to quickly check for updates on a single contianer or list of containers by name. **Without the need of pulling**.  
+dockcheck is created and released under the [GNU GPL v3.0](https://www.gnu.org/licenses/gpl-3.0-standalone.html) license.
-Preferably placed in `.bashrc` or similar.
-Example:
-```
-$ dupc ng
-Updates available for local_nginx.
-nginx_reverse is already latest.
-Updates available for paperless-ng.
-```
-## Also check out a spinoff brother-project [Palleri/dockcheck-web](https://github.com/Palleri/dockcheck-web) for a WebUI-front!
----
 
-## Special Thanks:
+## :heartpulse: Sponsorlist
-:bison: [t0rnis](https://github.com/t0rnis)   
+
-:leopard: [Palleri](https://github.com/Palleri)
+- [avegy](https://github.com/avegy)
+- [eichhorn](https://github.com/eichhorn)
+- [stepdg](https://github.com/stepdg)
+
+___
+
+### :floppy_disk: The [story](https://mag37.org/posts/project_dockcheck/) behind it. 1 year in retrospect.

addons/DSM/README.md

@@ -0,0 +1,35 @@
+## Using Dockcheck in DSM
+Dockcheck cannot directly update containers managed in the Container Manager GUI, but it can still be used to notify you of containers with updates available. There are two ways to be notified, each with their own caveats:
+
+1. Enabling email notifications within the Task Scheduler (_step 6i below_) will send an email that includes the entire script as run. This will not include the `urls.list` links to release notes, but it will show a full list of containers checked, up to date, and needing updates (following the args included in the scheduled task).
+2. The [DSM notification template](https://github.com/mag37/dockcheck/blob/main/notify_templates/notify_DSM.sh) will enable Dockcheck to directly send an email when using the `-i` flag. This is most useful when paired with an accurate [urls.list](https://github.com/mag37/dockcheck/blob/next063/notify_templates/urls.list) file, and results in a neat succinct email notification of only containers to be updated.
+
+This is a user preference, and both notifications are not necessary. However, regardless of the notification method, it is necessary to set up a scheduled task to run Dockcheck at a set interval (otherwise it will only run when manually triggered).
+
+
+## Automate Dockcheck with DSM Task Scheduler:
+
+1. Open Control Panel and navigate to Task Scheduler
+2. Create a Scheduled Task > User-defined script
+3. Task Name: Dockcheck
+4. User: root
+5. Schedule: _User Preference_
+6. Task Settings:
+    1. ✔  Send run details by email (include preferred email) _This is the optional step as described above)_
+    2. User-defined script: `export HOME=/root && cd /path/to/dockcheck && ./dockcheck.sh -n -i -I ` _or other custom args_
+8. Click OK, accept warning message
+
+
+## Set up the DSM Notification template
+
+Copy the [dockcheck/notify_templates/notify_DSM.sh](https://github.com/mag37/dockcheck/blob/main/notify_templates/notify_DSM.sh) to the same directory as where you keep `dockcheck.sh`.  
+Use as is (uses your default notification email setting) or edit and override manually.
+
+![](./dsm1.png)
+
+![](./dsm2.png)
+
+![](./dsm3.png)
+
+
+Made with much help and contribution from [@firmlyundecided](https://github.com/firmlyundecided) and [@yoyoma2](https://github.com/yoyoma2).

addons/prometheus/README.md

@@ -0,0 +1,61 @@
+## [Prometheus](https://github.com/prometheus/prometheus) and [node_exporter](https://github.com/prometheus/node_exporter)
+Dockcheck is capable to export metrics to prometheus via the text file collector provided by the node_exporter.
+In order to do so the -c flag has to be specified followed by the file path that is configured in the text file collector of the node_exporter.
+A simple cron job can be configured to export these metrics on a regular interval as shown in the sample below:
+
+```
+0 1 * * * /root/dockcheck.sh -n -c /var/lib/node_exporter/textfile_collector
+```
+
+The following metrics are exported to prometheus
+
+```
+# HELP dockcheck_images_analyzed Docker images that have been analyzed
+# TYPE dockcheck_images_analyzed gauge
+dockcheck_images_analyzed 22
+# HELP dockcheck_images_outdated Docker images that are outdated
+# TYPE dockcheck_images_outdated gauge
+dockcheck_images_outdated 7
+# HELP dockcheck_images_latest Docker images that are outdated
+# TYPE dockcheck_images_latest gauge
+dockcheck_images_latest 14
+# HELP dockcheck_images_error Docker images with analysis errors
+# TYPE dockcheck_images_error gauge
+dockcheck_images_error 1
+# HELP dockcheck_images_analyze_timestamp_seconds Last dockercheck run time
+# TYPE dockcheck_images_analyze_timestamp_seconds gauge
+dockcheck_images_analyze_timestamp_seconds 1737924029
+```
+
+Once those metrics are exported they can be used to define alarms as shown below
+
+```
+- alert: dockcheck_images_outdated
+  expr: sum by(instance) (dockcheck_images_outdated) > 0
+  for: 15s
+  labels:
+    severity: warning
+  annotations:
+    summary: "{{ $labels.instance }} has {{ $value }} outdated docker images."
+    description: "{{ $labels.instance }} has {{ $value }} outdated docker images."
+- alert: dockcheck_images_error
+  expr: sum by(instance) (dockcheck_images_error) > 0
+  for: 15s
+  labels:
+    severity: warning
+  annotations:
+    summary: "{{ $labels.instance }} has {{ $value }} docker images having an error."
+    description: "{{ $labels.instance }} has {{ $value }} docker images having an error."
+- alert: dockercheck_image_last_analyze
+  expr: (time() - dockcheck_images_analyze_timestamp_seconds) > (3600 * 24 * 3)
+  for: 15s
+  labels:
+    severity: warning
+  annotations:
+    summary: "{{ $labels.instance }} has not updated the dockcheck statistics for more than  3 days."
+    description: "{{ $labels.instance }} has not updated the dockcheck statistics for more than 3 days."
+```
+
+There is a reference Grafana dashboard in [grafana/grafana_dashboard.json](./grafana/grafana_dashboard.json).
+
+![](./grafana/grafana_dashboard.png)

addons/prometheus/grafana/grafana_dashboard.json

@@ -0,0 +1,382 @@
+{
+  "__inputs": [
+    {
+      "name": "DS_PROMETHEUS",
+      "label": "prometheus",
+      "description": "",
+      "type": "datasource",
+      "pluginId": "prometheus",
+      "pluginName": "Prometheus"
+    }
+  ],
+  "__elements": {},
+  "__requires": [
+    {
+      "type": "grafana",
+      "id": "grafana",
+      "name": "Grafana",
+      "version": "11.4.0"
+    },
+    {
+      "type": "datasource",
+      "id": "prometheus",
+      "name": "Prometheus",
+      "version": "1.0.0"
+    },
+    {
+      "type": "panel",
+      "id": "table",
+      "name": "Table",
+      "version": ""
+    }
+  ],
+  "annotations": {
+    "list": [
+      {
+        "builtIn": 1,
+        "datasource": {
+          "type": "grafana",
+          "uid": "-- Grafana --"
+        },
+        "enable": true,
+        "hide": true,
+        "iconColor": "rgba(0, 211, 255, 1)",
+        "name": "Annotations & Alerts",
+        "type": "dashboard"
+      }
+    ]
+  },
+  "editable": true,
+  "fiscalYearStartMonth": 0,
+  "graphTooltip": 0,
+  "id": null,
+  "links": [],
+  "panels": [
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "custom": {
+            "align": "auto",
+            "cellOptions": {
+              "type": "auto"
+            },
+            "inspect": false
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              },
+              {
+                "color": "red",
+                "value": 80
+              }
+            ]
+          }
+        },
+        "overrides": [
+          {
+            "matcher": {
+              "id": "byName",
+              "options": "last_analyze_timestamp"
+            },
+            "properties": [
+              {
+                "id": "unit",
+                "value": "dateTimeAsIso"
+              }
+            ]
+          },
+          {
+            "matcher": {
+              "id": "byName",
+              "options": "last_analyze_since"
+            },
+            "properties": [
+              {
+                "id": "unit",
+                "value": "s"
+              },
+              {
+                "id": "custom.cellOptions",
+                "value": {
+                  "mode": "gradient",
+                  "type": "color-background"
+                }
+              },
+              {
+                "id": "thresholds",
+                "value": {
+                  "mode": "absolute",
+                  "steps": [
+                    {
+                      "color": "green",
+                      "value": null
+                    },
+                    {
+                      "color": "red",
+                      "value": 259200
+                    }
+                  ]
+                }
+              }
+            ]
+          },
+          {
+            "matcher": {
+              "id": "byName",
+              "options": "images_outdated"
+            },
+            "properties": [
+              {
+                "id": "custom.cellOptions",
+                "value": {
+                  "mode": "gradient",
+                  "type": "color-background"
+                }
+              },
+              {
+                "id": "thresholds",
+                "value": {
+                  "mode": "absolute",
+                  "steps": [
+                    {
+                      "color": "green",
+                      "value": null
+                    },
+                    {
+                      "color": "red",
+                      "value": 1
+                    }
+                  ]
+                }
+              }
+            ]
+          },
+          {
+            "matcher": {
+              "id": "byName",
+              "options": "images_error"
+            },
+            "properties": [
+              {
+                "id": "custom.cellOptions",
+                "value": {
+                  "mode": "gradient",
+                  "type": "color-background"
+                }
+              },
+              {
+                "id": "thresholds",
+                "value": {
+                  "mode": "absolute",
+                  "steps": [
+                    {
+                      "color": "green",
+                      "value": null
+                    },
+                    {
+                      "color": "red",
+                      "value": 1
+                    }
+                  ]
+                }
+              }
+            ]
+          }
+        ]
+      },
+      "gridPos": {
+        "h": 14,
+        "w": 24,
+        "x": 0,
+        "y": 0
+      },
+      "id": 2,
+      "options": {
+        "cellHeight": "sm",
+        "footer": {
+          "countRows": false,
+          "fields": "",
+          "reducer": [
+            "sum"
+          ],
+          "show": false
+        },
+        "frameIndex": 1,
+        "showHeader": true,
+        "sortBy": []
+      },
+      "pluginVersion": "11.4.0",
+      "targets": [
+        {
+          "disableTextWrap": false,
+          "editorMode": "code",
+          "exemplar": false,
+          "expr": "sum by(instance) (dockcheck_images_analyzed)",
+          "format": "table",
+          "fullMetaSearch": false,
+          "hide": false,
+          "includeNullMetadata": true,
+          "instant": true,
+          "interval": "",
+          "legendFormat": "{{instance}}",
+          "range": false,
+          "refId": "dockcheck_images_analyzed",
+          "useBackend": false,
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          }
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "disableTextWrap": false,
+          "editorMode": "code",
+          "exemplar": false,
+          "expr": "sum by(instance) (dockcheck_images_outdated)",
+          "format": "table",
+          "fullMetaSearch": false,
+          "hide": false,
+          "includeNullMetadata": true,
+          "instant": true,
+          "legendFormat": "{{instance}}",
+          "range": false,
+          "refId": "dockcheck_images_outdated",
+          "useBackend": false
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "disableTextWrap": false,
+          "editorMode": "code",
+          "exemplar": false,
+          "expr": "sum by(instance) (dockcheck_images_latest)",
+          "format": "table",
+          "fullMetaSearch": false,
+          "hide": false,
+          "includeNullMetadata": true,
+          "instant": true,
+          "legendFormat": "{{instance}}",
+          "range": false,
+          "refId": "dockcheck_images_latest",
+          "useBackend": false
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "exemplar": false,
+          "expr": "sum by(instance) (dockcheck_images_error)",
+          "format": "table",
+          "hide": false,
+          "instant": true,
+          "legendFormat": "{{instance}}",
+          "range": false,
+          "refId": "dockcheck_images_error"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "exemplar": false,
+          "expr": "dockcheck_images_analyze_timestamp_seconds * 1000",
+          "format": "table",
+          "hide": false,
+          "instant": true,
+          "legendFormat": "{{instance}}",
+          "range": false,
+          "refId": "dockcheck_images_analyze_timestamp_seconds"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "exemplar": false,
+          "expr": "time() - dockcheck_images_analyze_timestamp_seconds",
+          "format": "table",
+          "hide": false,
+          "instant": true,
+          "legendFormat": "{{instance}}",
+          "range": false,
+          "refId": "dockcheck_images_last_analyze"
+        }
+      ],
+      "title": "Dockcheck Status",
+      "transformations": [
+        {
+          "id": "merge",
+          "options": {}
+        },
+        {
+          "id": "organize",
+          "options": {
+            "excludeByName": {
+              "Time": true,
+              "__name__": true,
+              "job": true
+            },
+            "includeByName": {},
+            "indexByName": {
+              "Time": 0,
+              "Value #dockcheck_images_analyze_timestamp_seconds": 2,
+              "Value #dockcheck_images_analyzed": 4,
+              "Value #dockcheck_images_error": 7,
+              "Value #dockcheck_images_last_analyze": 3,
+              "Value #dockcheck_images_latest": 5,
+              "Value #dockcheck_images_outdated": 6,
+              "instance": 1,
+              "job": 8
+            },
+            "renameByName": {
+              "Value #A": "analyze_timestamp",
+              "Value #dockcheck_images_analyze_timestamp_seconds": "last_analyze_timestamp",
+              "Value #dockcheck_images_analyzed": "images_analyzed",
+              "Value #dockcheck_images_error": "images_error",
+              "Value #dockcheck_images_last_analyze": "last_analyze_since",
+              "Value #dockcheck_images_latest": "images_latest",
+              "Value #dockcheck_images_outdated": "images_outdated"
+            }
+          }
+        }
+      ],
+      "type": "table"
+    }
+  ],
+  "schemaVersion": 40,
+  "tags": [],
+  "templating": {
+    "list": []
+  },
+  "time": {
+    "from": "now-6h",
+    "to": "now"
+  },
+  "timepicker": {},
+  "timezone": "browser",
+  "title": "Dockcheck Status",
+  "uid": "feb4pv3kv1hxca",
+  "version": 17,
+  "weekStart": ""
+}

addons/prometheus/prometheus_collector.sh

@@ -0,0 +1,28 @@
+prometheus_exporter() {
+  checkedImages=$(($1 + $2 + $3))
+  checkTimestamp=$(date +%s)
+  
+  promFileContent=()
+  promFileContent+=("# HELP dockcheck_images_analyzed Docker images that have been analyzed")
+  promFileContent+=("# TYPE dockcheck_images_analyzed gauge")
+  promFileContent+=("dockcheck_images_analyzed $checkedImages")
+  
+  promFileContent+=("# HELP dockcheck_images_outdated Docker images that are outdated")
+  promFileContent+=("# TYPE dockcheck_images_outdated gauge")
+  promFileContent+=("dockcheck_images_outdated ${#GotUpdates[@]}")
+
+  promFileContent+=("# HELP dockcheck_images_latest Docker images that are outdated")
+  promFileContent+=("# TYPE dockcheck_images_latest gauge")
+  promFileContent+=("dockcheck_images_latest ${#NoUpdates[@]}")
+  
+  promFileContent+=("# HELP dockcheck_images_error Docker images with analysis errors")
+  promFileContent+=("# TYPE dockcheck_images_error gauge")
+  promFileContent+=("dockcheck_images_error ${#GotErrors[@]}")
+  
+  promFileContent+=("# HELP dockcheck_images_analyze_timestamp_seconds Last dockercheck run time")
+  promFileContent+=("# TYPE dockcheck_images_analyze_timestamp_seconds gauge")
+  promFileContent+=("dockcheck_images_analyze_timestamp_seconds $checkTimestamp")
+  
+  printf "%s\n" "${promFileContent[@]}" > "$CollectorTextFileDirectory/dockcheck_info.prom\$\$"
+  mv -f "$CollectorTextFileDirectory/dockcheck_info.prom\$\$" "$CollectorTextFileDirectory/dockcheck_info.prom"
+}

default.config

@@ -0,0 +1,25 @@
+### Custom user variables
+# Copy this file to "dockcheck.config" to make it active
+# Can be placed in ~/.config/ or alongside dockcheck.sh
+#
+# Uncomment and set your preferred configuration variables here
+# This will not be replaced on updates
+
+#Timeout=10    # Set a timeout (in seconds) per container for registry checkups.
+#MaxAsync=10    # Set max asynchronous subprocesses, 1 default, 0 to disable.
+#BarWidth=50    # The character width of the progress bar
+#AutoMode=true    # Automatic updates, without interaction.
+#DontUpdate=true    # No updates; only checking availability without interaction.
+#AutoPrune=true    # Auto-Prune dangling images after update.
+#AutoSelfUpdate=true    # Allow automatic self updates - caution as this will pull new code and autorun it.
+#Notify=true    # Inform - send a preconfigured notification.
+#Exclude="one,two"    # Exclude containers, separated by comma.
+#DaysOld="5"    # Only update to new images that are N+ days old. Lists too recent with +prefix and age. 2xSlower.
+#Stopped="-a"    # Include stopped containers in the check. (Logic: docker ps -a).
+#OnlyLabel=true    # Only update if label is set. See readme.
+#ForceRestartStacks=true    # Force stop+start stack after update. Caution: restarts once for every updated container within stack.
+#DRunUp=true    # Allow updating images for docker run, wont update the container.
+#MonoMode=true    # Monochrome mode, no printf colour codes and hides progress bar.
+#PrintReleaseURL=true   # Prints custom releasenote urls alongside each container with updates (requires urls.list)`
+#PrintMarkdownURL=true    # Prints custom releasenote urls as markdown
+#OnlySpecific=true    # Only compose up the specific container, not the whole compose. (useful for master-compose structure).

dockcheck.sh

@@ -1,149 +1,581 @@
-#!/bin/bash
+#!/usr/bin/env bash
-VERSION="v0.1.3"
+VERSION="v0.6.4"
+### ChangeNotes: Restructured update process - first pulls all images, then recreates all containers. Added -F option.
 Github="https://github.com/mag37/dockcheck"
+RawUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/dockcheck.sh"
 
-### Check if there's a new release of the script:
+set -uo pipefail
-LatestRelease="$(curl -s -r 0-30 https://raw.githubusercontent.com/mag37/dockcheck/main/dockcheck.sh | sed -n "/VERSION/s/VERSION=//p" | tr -d '"')"
+shopt -s nullglob
-[ "$VERSION" != "$LatestRelease" ] && printf "New version available! Latest: "$LatestRelease" - Local: "$VERSION" \nGrab it here: "$Github" \n\n"
+shopt -s failglob
 
-### Help Function:
+# Variables for self updating
+ScriptArgs=( "$@" )
+ScriptPath="$(readlink -f "$0")"
+ScriptWorkDir="$(dirname "$ScriptPath")"
+
+# Check if there's a new release of the script
+LatestRelease="$(curl -s -r 0-50 "$RawUrl" | sed -n "/VERSION/s/VERSION=//p" | tr -d '"')"
+LatestChanges="$(curl -s -r 0-200 "$RawUrl" | sed -n "/ChangeNotes/s/# ChangeNotes: //p")"
+
+# User customizable defaults
+if [[ -s "${HOME}/.config/dockcheck.config" ]]; then
+  source "${HOME}/.config/dockcheck.config"
+elif [[ -s "${ScriptWorkDir}/dockcheck.config" ]]; then
+  source "${ScriptWorkDir}/dockcheck.config"
+fi
+
+# Help Function
 Help() {
-  echo "Syntax:     dockcheck.sh [OPTION] [part of name to filter]" 
+  echo "Syntax:     dockcheck.sh [OPTION] [part of name to filter]"
-  echo "Example:    dockcheck.sh -a ng"
+  echo "Example:    dockcheck.sh -y -x 10 -d 10 -e nextcloud,heimdall"
   echo
   echo "Options:"
-  echo "-h     Print this Help."
   echo "-a|y   Automatic updates, without interaction."
-  echo "-n     No updates, only checking availability."
+  echo "-c     Exports metrics as prom file for the prometheus node_exporter. Provide the collector textfile directory."
+  echo "-d N   Only update to new images that are N+ days old. Lists too recent with +prefix and age. 2xSlower."
+  echo "-e X   Exclude containers, separated by comma."
+  echo "-f     Force stop+start stack after update. Caution: restarts once for every updated container within stack."
+  echo "-F     Only compose up the specific container, not the whole compose stack (useful for master-compose structure)."
+  echo "-h     Print this Help."
+  echo "-i     Inform - send a preconfigured notification."
+  echo "-I     Prints custom releasenote urls alongside each container with updates (requires urls.list)."
+  echo "-l     Only update if label is set. See readme."
+  echo "-m     Monochrome mode, no printf colour codes and hides progress bar."
+  echo "-M     Prints custom releasenote urls as markdown (requires template support)."
+  echo "-n     No updates; only checking availability without interaction."
+  echo "-p     Auto-prune dangling images after update."
+  echo "-r     Allow updating images for docker run; won't update the container."
+  echo "-s     Include stopped containers in the check. (Logic: docker ps -a)."
+  echo "-t     Set a timeout (in seconds) per container for registry checkups, 10 is default."
+  echo "-u     Allow automatic self updates - caution as this will pull new code and autorun it."
+  echo "-v     Prints current version."
+  echo "-x N   Set max asynchronous subprocesses, 1 default, 0 to disable, 32+ tested."
+  echo
+  echo "Project source: $Github"
 }
 
-while getopts "aynh" options; do
+# Initialise variables
+Timeout=${Timeout:=10}
+MaxAsync=${MaxAsync:=1}
+BarWidth=${BarWidth:=50}
+AutoMode=${AutoMode:=false}
+DontUpdate=${DontUpdate:=false}
+AutoPrune=${AutoPrune:=false}
+AutoSelfUpdate=${AutoSelfUpdate:=false}
+OnlyLabel=${OnlyLabel:=false}
+Notify=${Notify:=false}
+ForceRestartStacks=${ForceRestartStacks:=false}
+DRunUp=${DRunUp:=false}
+MonoMode=${MonoMode:=false}
+PrintReleaseURL=${PrintReleaseURL:=false}
+PrintMarkdownURL=${PrintMarkdownURL:=false}
+Stopped=${Stopped:=""}
+CollectorTextFileDirectory=${CollectorTextFileDirectory:-}
+Exclude=${Exclude:-}
+DaysOld=${DaysOld:-}
+OnlySpecific=false
+SpecificContainer=${SpecificContainer:=""}
+Excludes=()
+GotUpdates=()
+NoUpdates=()
+GotErrors=()
+SelectedUpdates=()
+regbin=""
+jqbin=""
+
+# Colours
+c_red="\033[0;31m"
+c_green="\033[0;32m"
+c_yellow="\033[0;33m"
+c_blue="\033[0;34m"
+c_teal="\033[0;36m"
+c_reset="\033[0m"
+
+while getopts "ayfFhiIlmMnprsuvc:e:d:t:x:" options; do
   case "${options}" in
-    a|y) UpdYes="yes" ;;
+    a|y) AutoMode=true ;;
-    n) UpdYes="no" ;;
+    c)   CollectorTextFileDirectory="${OPTARG}" ;;
-    h|*) Help ; exit 0 ;;
+    d)   DaysOld=${OPTARG} ;;
+    e)   Exclude=${OPTARG} ;;
+    f)   ForceRestartStacks=true ;;
+    F)   OnlySpecific=true ;;
+    i)   Notify=true ;;
+    I)   PrintReleaseURL=true ;;
+    l)   OnlyLabel=true ;;
+    m)   MonoMode=true ;;
+    M)   PrintMarkdownURL=true ;;
+    n)   DontUpdate=true; AutoMode=true;;
+    p)   AutoPrune=true ;;
+    r)   DRunUp=true ;;
+    s)   Stopped="-a" ;;
+    t)   Timeout="${OPTARG}" ;;
+    u)   AutoSelfUpdate=true ;;
+    v)   printf "%s\n" "$VERSION"; exit 0 ;;
+    x)   MaxAsync=${OPTARG} ;;
+    h|*) Help; exit 2 ;;
   esac
 done
 shift "$((OPTIND-1))"
 
-### Set $1 to a variable for name filtering later.
+# Set $1 to a variable for name filtering later
-SearchName="$1"
+SearchName="${1:-}"
 
-### Check if required binary exists in PATH or directory:
+# Setting up options and sourcing functions
-if [[ $(builtin type -P "regctl") ]]; then 
+if [[ "$DontUpdate" == true ]]; then AutoMode=true; fi
-  regbin="regctl"
+if [[ "$MonoMode" == true ]]; then declare c_{red,green,yellow,blue,teal,reset}=""; fi
-elif [[ -f "./regctl" ]]; then
+if [[ "$Notify" == true ]]; then
-  regbin="./regctl"
+  if [[ -s "${ScriptWorkDir}/notify.sh" ]]; then
-else
+    source "${ScriptWorkDir}/notify.sh"
-  printf "Required dependency 'regctl' missing, do you want it downloaded? y/[n] "
+  else Notify=false
-  read GetDep
-  if [ "$GetDep" != "${GetDep#[Yy]}" ]; then
-    ### Check arch:
-    case "$(uname --machine)" in
-      x86_64|amd64) architecture="amd64" ;;
-      arm64|aarch64) architecture="arm64";;
-      *) echo "Architecture not supported, exiting." ; exit ;;
-    esac
-    curl -L https://github.com/regclient/regclient/releases/latest/download/regctl-linux-$architecture >./regctl
-    chmod 755 ./regctl
-    regbin="./regctl"
-  else
-    printf "%s\n" "Dependency missing, quitting."
-    exit
   fi
 fi
-### Check docker compose binary:
+if [[ -n "$Exclude" ]]; then
-if docker compose &> /dev/null ; then 
+  IFS=',' read -ra Excludes <<< "$Exclude"
-  DockerBin="docker compose"
+  unset IFS
-elif docker-compose -v &> /dev/null; then
+fi
-  DockerBin="docker-compose"
+if [[ -n "$DaysOld" ]]; then
-else
+  if ! [[ $DaysOld =~ ^[0-9]+$ ]]; then
-  printf "%s\n" "No docker compose binary available, quitting."
+    printf "Days -d argument given (%s) is not a number.\n" "$DaysOld"
-  exit
+    exit 2
+  fi
+fi
+if [[ -n "$CollectorTextFileDirectory" ]]; then
+  if ! [[ -d  $CollectorTextFileDirectory ]]; then
+    printf "The directory (%s) does not exist.\n" "$CollectorTextFileDirectory"
+    exit 2
+  else
+    source "${ScriptWorkDir}/addons/prometheus/prometheus_collector.sh"
+  fi
 fi
 
-### Numbered List -function:
+self_update_curl() {
-options() {
+  cp "$ScriptPath" "$ScriptPath".bak
-num=0
+  if command -v curl &>/dev/null; then
-for i in "${NumberedUpdates[@]}"; do
+    curl -L $RawUrl > "$ScriptPath"; chmod +x "$ScriptPath"
-  echo "$num) $i"
+    printf "\n%b---%b starting over with the updated version %b---%b\n" "$c_yellow" "$c_teal" "$c_yellow" "$c_reset"
-  ((num++))
+    exec "$ScriptPath" "${ScriptArgs[@]}" # run the new script with old arguments
-done
+    exit 1 # Exit the old instance
+  elif command -v wget &>/dev/null; then
+    wget $RawUrl -O "$ScriptPath"; chmod +x "$ScriptPath"
+    printf "\n%b---%b starting over with the updated version %b---%b\n" "$c_yellow" "$c_teal" "$c_yellow" "$c_reset"
+    exec "$ScriptPath" "${ScriptArgs[@]}" # run the new script with old arguments
+    exit 0 # exit the old instance
+  else
+    printf "\n%bcurl/wget not available %b- download the update manually: %b%s %b\n" "$c_red" "$c_reset" "$c_teal" "$Github" "$c_reset"
+  fi
+}
+
+self_update() {
+  cd "$ScriptWorkDir" || { printf "%bPath error,%b skipping update.\n" "$c_red" "$c_reset"; return; }
+  if command -v git &>/dev/null && [[ "$(git ls-remote --get-url 2>/dev/null)" =~ .*"mag37/dockcheck".* ]]; then
+    printf "\n%s\n" "Pulling the latest version."
+    git pull --force || { printf "%bGit error,%b manually pull/clone.\n" "$c_red" "$c_reset"; return; }
+    printf "\n%s\n" "--- starting over with the updated version ---"
+    cd - || { printf "%bPath error.%b\n" "$c_red"; return; }
+    exec "$ScriptPath" "${ScriptArgs[@]}" # run the new script with old arguments
+    exit 0 # exit the old instance
+  else
+    cd - || { printf "%bPath error.%b\n" "$c_red"; return; }
+    self_update_curl
+  fi
 }
 
-### Choose from list -function:
 choosecontainers() {
-  while [[ "$ChoiceClean" =~ [A-Za-z] || -z "$ChoiceClean" ]]; do
+  while [[ -z "${ChoiceClean:-}" ]]; do
-    printf "What containers do you like to update? \n"
+    read -r -p "Enter number(s) separated by comma, [a] for all - [q] to quit: " Choice
-    read -p 'Enter number(s) separated by comma (eg. 1,3,4): ' Choice
+    if [[ "$Choice" =~ [qQnN] ]]; then
-    if [ "$Choice" == "0" ] ; then 
+      exit 0
-      SelectedUpdates=( "${NumberedUpdates[@]:1}" )
+    elif [[ "$Choice" =~ [aAyY] ]]; then
-      ChoiceClean=$(echo "$Choice" |sed 's/[,.:;]/ /g')
+      SelectedUpdates=( "${GotUpdates[@]}" )
+      ChoiceClean=${Choice//[,.:;]/ }
     else
-      ChoiceClean=$(echo "$Choice" |sed 's/[,.:;]/ /g')
+      ChoiceClean=${Choice//[,.:;]/ }
-      for s in $ChoiceClean; do
+      for CC in $ChoiceClean; do
-        SelectedUpdates+=( "${NumberedUpdates[$s]}" )
+        if [[ "$CC" -lt 1 || "$CC" -gt $UpdCount ]]; then # Reset choice if out of bounds
+          echo "Number not in list: $CC"; unset ChoiceClean; break 1
+        else
+          SelectedUpdates+=( "${GotUpdates[$CC-1]}" )
+        fi
       done
     fi
   done
-  printf "\nYou've SelectedUpdates:\n"
-  printf "%s\n" "${SelectedUpdates[@]}"
 }
 
-### Check the image-hash of every running container VS the registry
+datecheck() {
-for i in $(docker ps --filter "name=$SearchName" --format '{{.Names}}') ; do
+  ImageDate=$("$regbin" -v error image inspect "$RepoUrl" --format='{{.Created}}' | cut -d" " -f1)
-  printf ". "
+  ImageEpoch=$(date -d "$ImageDate" +%s 2>/dev/null) || ImageEpoch=$(date -f "%Y-%m-%d" -j "$ImageDate" +%s)
-  RepoUrl=$(docker inspect "$i" --format='{{.Config.Image}}')
+  ImageAge=$(( ( $(date +%s) - ImageEpoch )/86400 ))
-  LocalHash=$(docker image inspect "$RepoUrl" --format '{{.RepoDigests}}')
+  if [[ "$ImageAge" -gt "$DaysOld" ]]; then
-  RegHash=$($regbin image digest --list "$RepoUrl" 2>/dev/null)
+    return 0
-  # Add container to GotErrors if regctl encounter problems.
-  if [ $? -eq 0 ] ; then
-    if [[ "$LocalHash" = *"$RegHash"* ]] ; then NoUpdates+=("$i"); else GotUpdates+=("$i"); fi
   else
-    GotErrors+=("$i")
+    return 1
   fi
-done
+}
 
-### Sort arrays alphabetically
+progress_bar() {
-IFS=$'\n' 
+  QueCurrent="$1"
-NoUpdates=($(sort <<<"${NoUpdates[*]}"))
+  QueTotal="$2"
-GotUpdates=($(sort <<<"${GotUpdates[*]}"))
+  BarWidth=${BarWidth:-50}
-GotErrors=($(sort <<<"${GotErrors[*]}"))
+  ((Percent=100*QueCurrent/QueTotal))
+  ((Complete=BarWidth*Percent/100))
+  ((Left=BarWidth-Complete)) || true # to not throw error when result is 0
+  BarComplete=$(printf "%${Complete}s" | tr " " "#")
+  BarLeft=$(printf "%${Left}s" | tr " " "-")
+  if [[ "$QueTotal" != "$QueCurrent" ]]; then
+    printf "\r[%s%s] %s/%s " "$BarComplete" "$BarLeft" "$QueCurrent" "$QueTotal"
+  else
+    printf "\r[%b%s%b] %s/%s \n" "$c_teal" "$BarComplete" "$c_reset" "$QueCurrent" "$QueTotal"
+  fi
+}
+
+# Function to add user-provided urls to releasenotes
+releasenotes() {
+  unset Updates
+  for update in "${GotUpdates[@]}"; do
+    found=false
+    while read -r container url; do
+      if [[ "$update" == "$container" ]] && [[ "$PrintMarkdownURL" == true ]]; then Updates+=("- [$update]($url)"); found=true;
+      elif [[ "$update" == "$container" ]]; then Updates+=("$update  ->  $url"); found=true;
+      fi
+    done < "${ScriptWorkDir}/urls.list"
+    if [[ "$found" == false ]] && [[ "$PrintMarkdownURL" == true ]]; then Updates+=("- $update  ->  url missing");
+    elif [[ "$found" == false ]]; then Updates+=("$update  ->  url missing");
+    else continue;
+    fi
+  done
+}
+
+# Static binary downloader for dependencies
+binary_downloader() {
+  BinaryName="$1"
+  BinaryUrl="$2"
+  case "$(uname -m)" in
+    x86_64|amd64) architecture="amd64" ;;
+    arm64|aarch64) architecture="arm64";;
+    *) printf "\n%bArchitecture not supported, exiting.%b\n" "$c_red" "$c_reset"; exit 1;;
+  esac
+  GetUrl="${BinaryUrl/TEMP/"$architecture"}"
+  if command -v curl &>/dev/null; then curl -L "$GetUrl" > "$ScriptWorkDir/$BinaryName";
+  elif command -v wget &>/dev/null; then wget "$GetUrl" -O "$ScriptWorkDir/$BinaryName";
+  else printf "\n%bcurl/wget not available - get %s manually from the repo link, exiting.%b" "$c_red" "$BinaryName" "$c_reset"; exit 1;
+  fi
+  [[ -f "$ScriptWorkDir/$BinaryName" ]] && chmod +x "$ScriptWorkDir/$BinaryName"
+}
+
+distro_checker() {
+  isRoot=false
+  [[ ${EUID:-} == 0 ]] && isRoot=true
+  if [[ -f /etc/alpine-release ]] ; then
+    [[ "$isRoot" == true ]] && PkgInstaller="apk add" || PkgInstaller="doas apk add"
+  elif [[ -f /etc/arch-release ]]; then
+    [[ "$isRoot" == true ]] && PkgInstaller="pacman -S" || PkgInstaller="sudo pacman -S"
+  elif [[ -f /etc/debian_version ]]; then
+    [[ "" == true ]] && PkgInstaller="apt-get install" || PkgInstaller="sudo apt-get install"
+  elif [[ -f /etc/redhat-release ]]; then
+    [[ "$isRoot" == true ]] && PkgInstaller="dnf install" || PkgInstaller="sudo dnf install"
+  elif [[ -f /etc/SuSE-release ]]; then
+    [[ "$isRoot" == true ]] && PkgInstaller="zypper install" || PkgInstaller="sudo zypper install"
+  elif [[ $(uname -s) == "Darwin" ]]; then PkgInstaller="brew install"
+  else PkgInstaller="ERROR"; printf "\n%bNo distribution could be determined%b, falling back to static binary.\n" "$c_yellow" "$c_reset"
+  fi
+}
+
+# Dependency check + installer function
+dependency_check() {
+  AppName="$1"
+  AppVar="$2"
+  AppUrl="$3"
+  if command -v "$AppName" &>/dev/null; then export "$AppVar"="$AppName";
+  elif [[ -f "$ScriptWorkDir/$AppName" ]]; then export "$AppVar"="$ScriptWorkDir/$AppName";
+  else
+    printf "\nRequired dependency %b'%s'%b missing, do you want to install it?\n" "$c_teal" "$AppName" "$c_reset"
+    read -r -p "y: With packagemanager (sudo). / s: Download static binary. y/s/[n] " GetBin
+    GetBin=${GetBin:-no} # set default to no if nothing is given
+    if [[ "$GetBin" =~ [yYsS] ]]; then
+      [[ "$GetBin" =~ [yY] ]] && distro_checker
+      if [[ -n "${PkgInstaller:-}" && "${PkgInstaller:-}" != "ERROR" ]]; then
+        [[ $(uname -s) == "Darwin" && "$AppName" == "regctl" ]] && AppName="regclient"
+        if $PkgInstaller "$AppName"; then
+          AppName="$1"
+          export "$AppVar"="$AppName"
+          printf "\n%b%b installed.%b\n" "$c_green" "$AppName" "$c_reset"
+        else
+          PkgInstaller="ERROR"
+          printf "\n%bPackagemanager install failed%b, falling back to static binary.\n" "$c_yellow" "$c_reset"
+        fi
+      fi
+      if [[ "$GetBin" =~ [sS] ]] || [[ "$PkgInstaller" == "ERROR" ]]; then
+          binary_downloader "$AppName" "$AppUrl"
+          [[ -f "$ScriptWorkDir/$AppName" ]] && { export "$AppVar"="$ScriptWorkDir/$1" && printf "\n%b%s downloaded.%b\n" "$c_green" "$AppName" "$c_reset"; }
+      fi
+    else printf "\n%bDependency missing, exiting.%b\n" "$c_red" "$c_reset"; exit 1;
+    fi
+  fi
+  # Final check if binary is correct
+  [[ "$1" == "jq" ]] && VerFlag="--version"
+  [[ "$1" == "regctl" ]] && VerFlag="version"
+  ${!AppVar} "$VerFlag" &> /dev/null  || { printf "%s\n" "$AppName is not working - try to remove it and re-download it, exiting."; exit 1; }
+}
+
+# Numbered List function
+# if urls.list exists add release note url per line
+list_options() {
+  num=1
+  for update in "${Updates[@]}"; do
+    echo "$num) $update"
+    ((num++))
+  done
+}
+
+# Version check & initiate self update
+if [[ "$VERSION" != "$LatestRelease" ]]; then
+  printf "New version available! %b%s%b ⇒ %b%s%b \n Change Notes: %s \n" "$c_yellow" "$VERSION" "$c_reset" "$c_green" "$LatestRelease" "$c_reset" "$LatestChanges"
+  if [[ "$AutoMode" == false ]]; then
+    read -r -p "Would you like to update? y/[n]: " SelfUpdate
+    [[ "$SelfUpdate" =~ [yY] ]] && self_update
+  elif [[ "$AutoMode" == true ]] && [[ "$AutoSelfUpdate" == true ]]; then self_update;
+  else
+    [[ "$Notify" == true ]] && { [[ $(type -t dockcheck_notification) == function ]] && dockcheck_notification "$VERSION" "$LatestRelease" "$LatestChanges" || printf "Could not source notification function.\n"; }
+  fi
+fi
+
+dependency_check "regctl" "regbin" "https://github.com/regclient/regclient/releases/latest/download/regctl-linux-TEMP"
+dependency_check "jq" "jqbin" "https://github.com/jqlang/jq/releases/latest/download/jq-linux-TEMP"
+
+# Check docker compose binary
+docker info &>/dev/null || { printf "\n%bYour current user does not have permissions to the docker socket - may require root / docker group. Exiting.%b\n" "$c_red" "$c_reset"; exit 1; }
+if docker compose version &>/dev/null; then DockerBin="docker compose" ;
+elif docker-compose -v &>/dev/null; then DockerBin="docker-compose" ;
+elif docker -v &>/dev/null; then
+  printf "%s\n" "No docker compose binary available, using plain docker (Not recommended!)"
+  printf "%s\n" "'docker run' will ONLY update images, not the container itself."
+else
+  printf "%s\n" "No docker binaries available, exiting."
+  exit 1
+fi
+
+# Listing typed exclusions
+if [[ -n ${Excludes[*]:-} ]]; then
+  printf "\n%bExcluding these names:%b\n" "$c_blue" "$c_reset"
+  printf "%s\n" "${Excludes[@]}"
+  printf "\n"
+fi
+
+# Variables for progress_bar function
+ContCount=$(docker ps $Stopped --filter "name=$SearchName" --format '{{.Names}}' | wc -l)
+RegCheckQue=0
+
+# Testing and setting timeout binary
+t_out=$(command -v timeout || echo "")
+if [[ $t_out ]]; then
+  t_out=$(realpath "$t_out" 2>/dev/null || readlink -f "$t_out")
+  if [[ $t_out =~ "busybox" ]]; then
+    t_out="timeout ${Timeout}"
+  else t_out="timeout --foreground ${Timeout}"
+  fi
+else t_out=""
+fi
+
+check_image() {
+  i="$1"
+  local Excludes=($Excludes_string)
+  for e in "${Excludes[@]}"; do
+    if [[ "$i" == "$e" ]]; then
+      printf "%s\n" "Skip $i"
+      return
+    fi
+  done
+
+  # Skipping non-compose containers unless option is set
+  ContLabels=$(docker inspect "$i" --format '{{json .Config.Labels}}')
+  ContPath=$($jqbin -r '."com.docker.compose.project.working_dir"' <<< "$ContLabels")
+  [[ "$ContPath" == "null" ]] && ContPath=""
+  if [[ -z "$ContPath" ]] && [[ "$DRunUp" == false ]]; then
+    printf "%s\n" "NoUpdates !$i - not checked, no compose file"
+    return
+  fi
+
+  local NoUpdates GotUpdates GotErrors
+  ImageId=$(docker inspect "$i" --format='{{.Image}}')
+  RepoUrl=$(docker inspect "$i" --format='{{.Config.Image}}')
+  LocalHash=$(docker image inspect "$ImageId" --format '{{.RepoDigests}}')
+
+  # Checking for errors while setting the variable
+  if RegHash=$($t_out "$regbin" -v error image digest --list "$RepoUrl" 2>&1); then
+    if [[ "$LocalHash" = *"$RegHash"* ]]; then
+      printf "%s\n" "NoUpdates $i"
+    else
+      if [[ -n "${DaysOld:-}" ]] && ! datecheck; then
+        printf "%s\n" "NoUpdates +$i ${ImageAge}d"
+      else
+        printf "%s\n" "GotUpdates $i"
+      fi
+    fi
+  else
+    printf "%s\n" "GotErrors $i - ${RegHash}"  # Reghash contains an error code here
+  fi
+}
+
+# Make required functions and variables available to subprocesses
+export -f check_image datecheck
+export Excludes_string="${Excludes[*]:-}" # Can only export scalar variables
+export t_out regbin RepoUrl DaysOld DRunUp jqbin
+
+# Check for POSIX xargs with -P option, fallback without async
+if (echo "test" | xargs -P 2 >/dev/null 2>&1) && [[ "$MaxAsync" != 0 ]]; then
+  XargsAsync="-P $MaxAsync"
+else
+  XargsAsync=""
+  [[ "$MaxAsync" != 0 ]] && printf "%bMissing POSIX xargs, consider installing 'findutils' for asynchronous lookups.%b\n" "$c_yellow" "$c_reset"
+fi
+
+# Asynchronously check the image-hash of every running container VS the registry
+while read -r line; do
+  ((RegCheckQue+=1))
+  if [[ "$MonoMode" == false ]]; then progress_bar "$RegCheckQue" "$ContCount"; fi
+
+  Got=${line%% *}  # Extracts the first word (NoUpdates, GotUpdates, GotErrors)
+  item=${line#* }
+
+  case "$Got" in
+    NoUpdates) NoUpdates+=("$item") ;;
+    GotUpdates) GotUpdates+=("$item") ;;
+    GotErrors) GotErrors+=("$item") ;;
+    Skip) ;;
+    *) echo "Error! Unexpected output from subprocess: ${line}" ;;
+  esac
+done < <( \
+  docker ps $Stopped --filter "name=$SearchName" --format '{{.Names}}' | \
+  xargs $XargsAsync -I {} bash -c 'check_image "{}"' \
+)
+
+# Sort arrays alphabetically
+IFS=$'\n'
+NoUpdates=($(sort <<<"${NoUpdates[*]:-}"))
+GotUpdates=($(sort <<<"${GotUpdates[*]:-}"))
 unset IFS
-### Create new Array to use for the numbered list:
-NumberedUpdates=(ALL "${GotUpdates[@]}")
 
-### List what containers got updates or not
+# Run the prometheus exporter function
-if [ -n "$NoUpdates" ] ; then
+if [[ -n "${CollectorTextFileDirectory:-}" ]]; then
-  printf "\n\033[32;1mContainers on latest version:\033[0m\n"
+  if type -t prometheus_exporter &>/dev/null; then
+    prometheus_exporter ${#NoUpdates[@]} ${#GotUpdates[@]} ${#GotErrors[@]}
+  else
+    printf "%s\n" "Could not source prometheus exporter function."
+  fi
+fi
+
+# Define how many updates are available
+UpdCount="${#GotUpdates[@]}"
+
+# List what containers got updates or not
+if [[ -n ${NoUpdates[*]:-} ]]; then
+  printf "\n%bContainers on latest version:%b\n" "$c_green" "$c_reset"
   printf "%s\n" "${NoUpdates[@]}"
 fi
-if [ -n "$GotErrors" ] ; then
+if [[ -n ${GotErrors[*]:-} ]]; then
-  printf "\n\033[33;1mContainers with errors, wont get updated:\033[0m\n"
+  printf "\n%bContainers with errors, won't get updated:%b\n" "$c_red" "$c_reset"
   printf "%s\n" "${GotErrors[@]}"
+  printf "%binfo:%b 'unauthorized' often means not found in a public registry.\n" "$c_blue" "$c_reset"
 fi
-if [ -n "$GotUpdates" ] ; then 
+if [[ -n ${GotUpdates[*]:-} ]]; then
-   printf "\n\033[31;1mContainers with updates available:\033[0m\n"
+  printf "\n%bContainers with updates available:%b\n" "$c_yellow" "$c_reset"
-   [ -z "$UpdYes" ] && options || printf "%s\n" "${GotUpdates[@]}"
+  if [[ -s "$ScriptWorkDir/urls.list" ]] && [[ "$PrintReleaseURL" == true ]]; then releasenotes; else Updates=("${GotUpdates[@]}"); fi
+  [[ "$AutoMode" == false ]] && list_options || printf "%s\n" "${Updates[@]}"
+  [[ "$Notify" == true ]] && { type -t send_notification &>/dev/null && send_notification "${GotUpdates[@]}" || printf "\nCould not source notification function.\n"; }
 fi
 
-### Optionally get updates if there's any 
+# Optionally get updates if there's any
-if [ -n "$GotUpdates" ] ; then
+if [[ -n "${GotUpdates:-}" ]]; then
-  if [ -z "$UpdYes" ] ; then
+  if [[ "$AutoMode" == false ]]; then
-  printf "\n\033[36;1mDo you want to update? y/[n]\033[0m "
+    printf "\n%bChoose what containers to update.%b\n" "$c_teal" "$c_reset"
-  read UpdYes
+    choosecontainers
-  [ "$UpdYes" != "${UpdYes#[Yy]}" ] && choosecontainers
   else
     SelectedUpdates=( "${GotUpdates[@]}" )
   fi
-  if [ "$UpdYes" != "${UpdYes#[Yy]}" ] ; then
+  if [[ "$DontUpdate" == false ]]; then
-    for i in "${SelectedUpdates[@]}"
+    printf "\n%bUpdating container(s):%b\n" "$c_blue" "$c_reset"
-    do 
+    printf "%s\n" "${SelectedUpdates[@]}"
-      ContPath=$(docker inspect "$i" --format '{{ index .Config.Labels "com.docker.compose.project.config_files" }}')
+
-      ContName=$(docker inspect "$i" --format '{{ index .Config.Labels "com.docker.compose.service" }}')
+    NumberofUpdates="${#SelectedUpdates[@]}"
-      $DockerBin -f "$ContPath" pull "$ContName"
+
-      $DockerBin -f "$ContPath" up -d "$ContName"
+    CurrentQue=0
+    for i in "${SelectedUpdates[@]}"; do
+      ((CurrentQue+=1))
+      printf "\n%bNow updating (%s/%s): %b%s%b\n" "$c_teal" "$CurrentQue" "$NumberofUpdates" "$c_blue" "$i" "$c_reset"
+      ContLabels=$(docker inspect "$i" --format '{{json .Config.Labels}}')
+      ContImage=$(docker inspect "$i" --format='{{.Config.Image}}')
+      ContPath=$($jqbin -r '."com.docker.compose.project.working_dir"' <<< "$ContLabels")
+      [[ "$ContPath" == "null" ]] && ContPath=""
+      ContUpdateLabel=$($jqbin -r '."mag37.dockcheck.update"' <<< "$ContLabels")
+      [[ "$ContUpdateLabel" == "null" ]] && ContUpdateLabel=""
+      # Checking if Label Only -option is set, and if container got the label
+      [[ "$OnlyLabel" == true ]] && { [[ "$ContUpdateLabel" != true ]] && { echo "No update label, skipping."; continue; } }
+
+      # Checking if compose-values are empty - hence started with docker run
+      if [[ -z "$ContPath" ]]; then
+        if [[ "$DRunUp" == true ]]; then
+          docker pull "$ContImage"
+          printf "%s\n" "$i got a new image downloaded, rebuild manually with preferred 'docker run'-parameters"
+        else
+          printf "\n%b%s%b has no compose labels, probably started with docker run - %bskipping%b\n\n" "$c_yellow" "$i" "$c_reset" "$c_yellow" "$c_reset"
+        fi
+        continue
+      fi
+
+      docker pull "$ContImage" || { printf "\n%bDocker error, exiting!%b\n" "$c_red" "$c_reset" ; exit 1; }
     done
+    printf "\n%bDone pulling updates. %bRecreating updated containers.%b\n" "$c_green" "$c_blue" "$c_reset"
+
+    CurrentQue=0
+    for i in "${SelectedUpdates[@]}"; do
+      ((CurrentQue+=1))
+      unset CompleteConfs
+      # Extract labels and metadata
+      ContLabels=$(docker inspect "$i" --format '{{json .Config.Labels}}')
+      ContImage=$(docker inspect "$i" --format='{{.Config.Image}}')
+      ContPath=$($jqbin -r '."com.docker.compose.project.working_dir"' <<< "$ContLabels")
+      [[ "$ContPath" == "null" ]] && ContPath=""
+      ContConfigFile=$($jqbin -r '."com.docker.compose.project.config_files"' <<< "$ContLabels")
+      [[ "$ContConfigFile" == "null" ]] && ContConfigFile=""
+      ContName=$($jqbin -r '."com.docker.compose.service"' <<< "$ContLabels")
+      [[ "$ContName" == "null" ]] && ContName=""
+      ContEnv=$($jqbin -r '."com.docker.compose.project.environment_file"' <<< "$ContLabels")
+      [[ "$ContEnv" == "null" ]] && ContEnv=""
+      ContUpdateLabel=$($jqbin -r '."mag37.dockcheck.update"' <<< "$ContLabels")
+      [[ "$ContUpdateLabel" == "null" ]] && ContUpdateLabel=""
+      ContRestartStack=$($jqbin -r '."mag37.dockcheck.restart-stack"' <<< "$ContLabels")
+      [[ "$ContRestartStack" == "null" ]] && ContRestartStack=""
+      ContOnlySpecific=$($jqbin -r '."mag37.dockcheck.only-specific-container"' <<< "$ContLabels")
+      [[ "$ContRestartStack" == "null" ]] && ContRestartStack=""
+
+      # Checking if compose-values are empty - hence started with docker run
+      [[ -z "$ContPath" ]] && continue
+
+      # cd to the compose-file directory to account for people who use relative volumes
+      cd "$ContPath" || { printf "\n%bPath error - skipping%b %s" "$c_red" "$c_reset" "$i"; continue; }
+      ## Reformatting path + multi compose
+      if [[ $ContConfigFile = '/'* ]]; then
+        CompleteConfs=$(for conf in ${ContConfigFile//,/ }; do printf -- "-f %s " "$conf"; done)
+      else
+        CompleteConfs=$(for conf in ${ContConfigFile//,/ }; do printf -- "-f %s/%s " "$ContPath" "$conf"; done)
+      fi
+      # Check if the container got an environment file set and reformat it
+      ContEnvs=""
+      if [[ -n "$ContEnv" ]]; then ContEnvs=$(for env in ${ContEnv//,/ }; do printf -- "--env-file %s " "$env"; done); fi
+      # Set variable when compose up should only target the specific container, not the stack
+      if [[ $OnlySpecific == true ]] || [[ $ContOnlySpecific == true ]]; then SpecificContainer="$ContName"; fi
+
+      printf "\n%bNow recreating (%s/%s): %b%s%b\n" "$c_teal" "$CurrentQue" "$NumberofUpdates" "$c_blue" "$i" "$c_reset"
+      # Check if the whole stack should be restarted
+      if [[ "$ContRestartStack" == true ]] || [[ "$ForceRestartStacks" == true ]]; then
+        ${DockerBin} ${CompleteConfs} stop; ${DockerBin} ${CompleteConfs} ${ContEnvs} up -d || { printf "\n%bDocker error, exiting!%b\n" "$c_red" "$c_reset" ; exit 1; }
+      else
+        ${DockerBin} ${CompleteConfs} ${ContEnvs} up -d ${SpecificContainer} || { printf "\n%bDocker error, exiting!%b\n" "$c_red" "$c_reset" ; exit 1; }
+      fi
+    done
+    if [[ "$AutoPrune" == false ]] && [[ "$AutoMode" == false ]]; then printf "\n"; read -rep "Would you like to prune dangling images? y/[n]: " AutoPrune; fi
+    if [[ "$AutoPrune" == true ]] || [[ "$AutoPrune" =~ [yY] ]]; then printf "\n Auto pruning.."; docker image prune -f; fi
+    printf "\n%bAll done!%b\n" "$c_green" "$c_reset"
   else
     printf "\nNo updates installed, exiting.\n"
   fi

dockcheck_docker-run_ver.sh

@@ -1,144 +0,0 @@
-#!/bin/bash
-### VERSION v.0.1.1
-
-### DOCKER RUN - VERSION
-
-### WARNING WONT REBUILD CONTAINERS - ONLY GRAB NEW IMAGES
-### If running docker compose, use the main version. (recommended!)
-
-### Help Function:
-Help() {
-  echo "Syntax:     dockcheck.sh [OPTION] [part of name to filter]" 
-  echo "Example:    dockcheck.sh -a ng"
-  echo
-  echo "Options:"
-  echo "-h     Print this Help."
-  echo "-a|y   Automatic updates, without interaction."
-  echo "-n     No updates, only checking availability."
-}
-
-while getopts "aynh" options; do
-  case "${options}" in
-    a|y) UpdYes="yes" ;;
-    n) UpdYes="no" ;;
-    h|*) Help ; exit 0 ;;
-  esac
-done
-shift "$((OPTIND-1))"
-
-### Set $1 to a variable for later
-SearchName="$1"
-
-### Check if required binary exists in PATH or directory:
-if [[ $(builtin type -P "regctl") ]]; then 
-  regbin="regctl"
-elif [[ -f "./regctl" ]]; then
-  regbin="./regctl"
-else
-  printf "Required dependency 'regctl' missing, do you want it downloaded? y/[n] "
-  read GetDep
-  if [ "$GetDep" != "${GetDep#[Yy]}" ]; then
-    ### Check arch:
-    case "$(uname --machine)" in
-      x86_64|amd64) architecture="amd64" ;;
-      arm64|aarch64) architecture="arm64";;
-      *) echo "Architecture not supported, exiting." ; exit ;;
-    esac
-    curl -L https://github.com/regclient/regclient/releases/latest/download/regctl-linux-$architecture >./regctl
-    chmod 755 ./regctl
-    regbin="./regctl"
-  else
-    printf "%s\n" "Dependency missing, quitting."
-    exit
-  fi
-fi
-
-### Numbered List -function:
-options() {
-num=0
-for i in "${NumberedUpdates[@]}"; do
-  echo "$num) $i"
-  ((num++))
-done
-}
-
-### Choose from list -function:
-choosecontainers() {
-  while [[ "$ChoiceClean" =~ [A-Za-z] || -z "$ChoiceClean" ]]; do
-    printf "What containers do you like to update? \n"
-    # options
-    read -p 'Enter number(s) separated by comma (eg. 1,3,4): ' Choice
-    if [ "$Choice" == "0" ] ; then 
-      SelectedUpdates=( ${NumberedUpdates[@]:1} )
-      ChoiceClean=$(echo $Choice|sed 's/[,.:;]/ /g')
-    else
-      ChoiceClean=$(echo $Choice|sed 's/[,.:;]/ /g')
-      for s in $ChoiceClean; do
-        SelectedUpdates+=( ${NumberedUpdates[$s]} )
-      done
-    fi
-  done
-  printf "\nYou've SelectedUpdates:\n"
-  printf "%s\n" "${SelectedUpdates[@]}"
-}
-
-### Check the image-hash of every running container VS the registry
-for i in $(docker ps --filter "name=$SearchName" --format '{{.Names}}') ; do
-  printf ". "
-  RepoUrl=$(docker inspect "$i" --format='{{.Config.Image}}')
-  LocalHash=$(docker image inspect "$RepoUrl" --format '{{.RepoDigests}}')
-  RegHash=$($regbin image digest --list "$RepoUrl" 2>/dev/null)
-  # Check if regtcl produces errors - add to GotErrors if so.
-  if [ $? -eq 0 ] ; then
-    if [[ "$LocalHash" = *"$RegHash"* ]] ; then NoUpdates+=("$i"); else GotUpdates+=("$i"); fi
-  else
-    GotErrors+=("$i")
-  fi
-done
-
-### Sort arrays alphabetically
-IFS=$'\n' 
-NoUpdates=($(sort <<<"${NoUpdates[*]}"))
-GotUpdates=($(sort <<<"${GotUpdates[*]}"))
-GotErrors=($(sort <<<"${GotErrors[*]}"))
-unset IFS
-### Create new Array to use for the numbered list:
-NumberedUpdates=(ALL "${GotUpdates[@]}")
-
-### List what containers got updates or not
-if [ -n "$NoUpdates" ] ; then
-  printf "\n\033[32;1mContainers on latest version:\033[0m\n"
-  printf "%s\n" "${NoUpdates[@]}"
-fi
-if [ -n "$GotErrors" ] ; then
-  printf "\n\033[33;1mContainers with errors, wont get updated:\033[0m\n"
-  printf "%s\n" "${GotErrors[@]}"
-fi
-if [ -n "$GotUpdates" ] ; then 
-   printf "\n\033[31;1mContainers with updates available:\033[0m\n"
-   [ -z "$UpdYes" ] && options || printf "%s\n" "${GotUpdates[@]}"
-fi
-
-### Optionally get updates if there's any 
-if [ -n "$GotUpdates" ] ; then
-  if [ -z "$UpdYes" ] ; then
-  printf "\n\033[36;1mDo you want to update? y/[n]\033[0m "
-  read UpdYes
-  [ "$UpdYes" != "${UpdYes#[Yy]}" ] && choosecontainers
-  else
-    SelectedUpdates=( "${GotUpdates[@]}" )
-  fi
-  if [ "$UpdYes" != "${UpdYes#[Yy]}" ] ; then
-    for i in "${SelectedUpdates[@]}"; do 
-      ContImage=$(docker inspect "$i" --format='{{.Config.Image}}')
-      docker pull $ContImage
-      printf "%s\n" "$i got a new image downloaded, rebuild manually with preferred 'docker run'-parameters"
-    done
-  else
-    printf "\nNo updates installed, exiting.\n"
-  fi
-else
-  printf "\nNo updates available, exiting.\n"
-fi
-
-exit 0

dupc_function.sh

@@ -1,29 +0,0 @@
-#!/bin/bash
-
-### Requires the regctl binary.
-### Get it here: https://github.com/regclient/regclient/releases
-
-### Preferably placed in .bashrc or similar
-
-### Set the full path to the binary or just regctl if in PATH:
-regctl="/home/gw-tdc/dockers/regctl"
-
-dupc () {
-  if [[ "$@" == "help" ]]; then 
-    echo "No container name given, here's the list of currently running containers:" 
-    docker ps --format '{{.Names}}'
-  else
-    for i in $(docker ps --filter "name=$@" --format '{{.Names}}')
-    do
-      RepoUrl=$(docker inspect $i --format='{{.Config.Image}}')
-      LocalHash=$(docker image inspect $RepoUrl --format '{{.RepoDigests}}')
-      RegHash=$($regctl image digest --list $RepoUrl 2>/dev/null)
-      if [ $? -eq 0 ] ; then
-        if [[ "$LocalHash" = *"$RegHash"* ]] ; then printf "$i is already latest.\n" ; else printf "$i got updates.\n" ; fi
-      else
-        printf "$i got errors, no check possible.\n"
-      fi 
-    done
-  fi
-}
-dupc $1

extras/apprise_quickstart.md

@@ -0,0 +1,130 @@
+# A small guide on getting started with Apprise notifications.
+
+
+## Standalone docker container: [linuxserver/apprise-api](https://hub.docker.com/r/linuxserver/apprise-api)
+
+Set up the docker compose as preferred:
+```yaml
+---
+version: "2.1"
+services:
+  apprise-api:
+    image: lscr.io/linuxserver/apprise-api:latest
+    container_name: apprise-api
+    environment:
+      - PUID=1000
+      - PGID=1000
+      - TZ=Etc/UTC
+    volumes:
+      - /path/to/apprise-api/config:/config
+    ports:
+      - 8000:8000
+    restart: unless-stopped
+```
+
+Then browse to the webui.
+![](apprise-ex1.png)
+Here you'll click **Configuration Manager**, read the overview and then click on **Configuration**.
+Under **Configuration** you'll craft/paste your notification config.
+
+![](apprise-ex2.png)
+The simplest way is just paste the url's as is (like in the example above).  
+There are many ways to customize with tags, groups, json and more. Read [caronc/apprise-api](https://github.com/caronc/apprise-api) for more info!  
+
+Look at the [apprise wiki: Notification Services](https://github.com/caronc/apprise/wiki) for more info about how the url syntax for different services works.  
+
+
+You can also use the [caronc/apprise-api](https://github.com/caronc/apprise-api) to host the api as a frontend to an already existing **Apprise**-setup on the host.
+
+
+### Customize the **notify.sh** file.
+After you're done with the setup of the container and tried your notifications, you can copy the `notify_apprise.sh` file to `notify.sh` and start editing it.
+
+Comment out/remove the bare metal apprise-command (starting with `apprise -vv -t...`).
+Uncomment and edit the `AppriseURL` variable and *curl* line
+It should look something like this when curling the API:
+```bash
+send_notification() {
+Updates=("$@")
+UpdToString=$( printf "%s\n" "${Updates[@]}" )
+FromHost=$(hostname)
+
+printf "\nSending Apprise notification\n"
+
+MessageTitle="$FromHost - updates available."
+# Setting the MessageBody variable here.
+read -d '\n' MessageBody << __EOF
+Containers on $FromHost with updates available:
+
+$UpdToString
+
+__EOF
+
+AppriseURL="http://IP.or.mydomain.tld:8000/notify/apprise"
+curl -X POST -F "title=$MessageTitle" -F "body=$MessageBody" -F "tags=all" $AppriseURL
+
+}
+```
+
+That's all!
+___
+___
+
+
+## On host installed **Apprise**
+Follow the official guide on [caronc/apprise](https://github.com/caronc/apprise)!
+
+### A brief, basic "get started"
+
+- Install **apprise**
+    - python package `pip install apprise`
+    - packaged in EPEL/Fedora `dnf install apprise`
+    - packaged in AUR `[yay/pikaur/paru/other] apprise`
+
+- Create a config file with your notification credentials (source of notifications):
+```ini
+mailto://user:password@yahoo.com
+slack://token_a/token_b/token_c
+kodi://example.com
+```
+Then either source the notifications with `-c=/path/to/config/apprise` or store them in *PATH* to skip referencing (`~/.apprise` or `~/.config/apprise`).
+
+- Test apprise with a single notification:
+    - `apprise -vv -t 'test title' -b 'test notification body' 'mailto://myemail:mypass@gmail.com'`
+- Set up your notification URL's and test them.
+    - Look at the [apprise wiki: Notification Services](https://github.com/caronc/apprise/wiki) for more info about how the url syntax for different services works.  
+
+### When done, customize the **notify.sh** file.
+After you're done with the setup of the container and tried your notifications, you can copy the `notify_apprise.sh` file to `notify.sh` and start editing it.
+
+Replace the url's corresponding to the services you've configured.
+```bash
+send_notification() {
+Updates=("$@")
+UpdToString=$( printf "%s\n" "${Updates[@]}" )
+FromHost=$(hostname)
+
+printf "\nSending Apprise notification\n"
+
+MessageTitle="$FromHost - updates available."
+# Setting the MessageBody variable here.
+read -d '\n' MessageBody << __EOF
+Containers on $FromHost with updates available:
+
+$UpdToString
+
+__EOF
+
+# Modify to fit your setup:
+apprise -vv -t "$MessageTitle" -b "$MessageBody" \
+   mailto://myemail:mypass@gmail.com \
+   mastodons://{token}@{host} \
+   pbul://o.gn5kj6nfhv736I7jC3cj3QLRiyhgl98b \
+   tgram://{bot_token}/{chat_id}/
+
+}
+```
+
+That's all!
+___
+___

extras/dc_brief.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+
+### If not in PATH, set full path. Else just "regctl"
+regbin="regctl"
+### options to allow exclude:
+while getopts "e:" options; do
+  case "${options}" in
+    e) Exclude=${OPTARG} ;;
+    *) exit 0 ;;
+  esac
+done
+shift "$((OPTIND-1))"
+### Create array of excludes
+IFS=',' read -r -a Excludes <<< "$Exclude" ; unset IFS
+
+SearchName="$1"
+
+for i in $(docker ps --filter "name=$SearchName" --format '{{.Names}}') ; do
+  for e in "${Excludes[@]}" ; do [[ "$i" == "$e" ]] && continue 2 ; done
+  printf ". "
+  RepoUrl=$(docker inspect "$i" --format='{{.Config.Image}}')
+  LocalHash=$(docker image inspect "$RepoUrl" --format '{{.RepoDigests}}')
+  ### Checking for errors while setting the variable:
+  if RegHash=$($regbin image digest --list "$RepoUrl" 2>/dev/null) ; then
+    if [[ "$LocalHash" = *"$RegHash"* ]] ; then NoUpdates+=("$i"); else GotUpdates+=("$i"); fi
+  else
+    GotErrors+=("$i")
+  fi
+done
+
+### Sort arrays alphabetically
+IFS=$'\n'
+NoUpdates=($(sort <<<"${NoUpdates[*]}"))
+GotUpdates=($(sort <<<"${GotUpdates[*]}"))
+GotErrors=($(sort <<<"${GotErrors[*]}"))
+unset IFS
+
+### List what containers got updates or not
+if [[ -n ${NoUpdates[*]} ]] ; then
+  printf "\n\033[0;32mContainers on latest version:\033[0m\n"
+  printf "%s\n" "${NoUpdates[@]}"
+fi
+if [[ -n ${GotErrors[*]} ]] ; then
+  printf "\n\033[0;31mContainers with errors, wont get updated:\033[0m\n"
+  printf "%s\n" "${GotErrors[@]}"
+fi
+if [[ -n ${GotUpdates[*]} ]] ; then
+   printf "\n\033[0;33mContainers with updates available:\033[0m\n"
+   printf "%s\n" "${GotUpdates[@]}"
+fi
+printf "\n\n"

extras/errorCheck.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+SearchName="$1"
+for i in $(docker ps --filter "name=$SearchName" --format '{{.Names}}') ; do
+  echo "------------ $i ------------"
+  ContLabels=$(docker inspect "$i" --format '{{json .Config.Labels}}')
+  ContImage=$(docker inspect "$i" --format='{{.Config.Image}}')
+  ContPath=$(jq -r '."com.docker.compose.project.working_dir"' <<< "$ContLabels")
+  [ "$ContPath" == "null" ] && ContPath=""
+  [ -z "$ContPath" ] && { "$i has no compose labels - skipping" ; continue ; }
+  ContConfigFile=$(jq -r '."com.docker.compose.project.config_files"' <<< "$ContLabels")
+  [ "$ContConfigFile" == "null" ] && ContConfigFile=""
+  ContName=$(jq -r '."com.docker.compose.service"' <<< "$ContLabels")
+  [ "$ContName" == "null" ] && ContName=""
+  ContEnv=$(jq -r '."com.docker.compose.project.environment_file"' <<< "$ContLabels")
+  [ "$ContEnv" == "null" ] && ContEnv=""
+  ContUpdateLabel=$(jq -r '."mag37.dockcheck.update"' <<< "$ContLabels")
+  [ "$ContUpdateLabel" == "null" ] && ContUpdateLabel=""
+  ContRestartStack=$(jq -r '."mag37.dockcheck.restart-stack"' <<< "$ContLabels")
+  [ "$ContRestartStack" == "null" ] && ContRestartStack=""
+
+  if [[ $ContConfigFile = '/'* ]] ; then
+    ComposeFile="$ContConfigFile"
+  else
+    ComposeFile="$ContPath/$ContConfigFile"
+  fi
+
+  echo -e "Service name:\t\t$ContName"
+  echo -e "Project working dir:\t$ContPath"
+  echo -e "Compose files:\t\t$ComposeFile"
+  echo -e "Environment files:\t$ContEnv"
+  echo -e "Container image:\t$ContImage"
+  echo -e "Update label:\t$ContUpdateLabel"
+  echo -e "Restart Stack label:\t$ContRestartStack"
+  echo
+  echo "Mounts:"
+  docker inspect  -f '{{ range .Mounts }}{{ .Source }}:{{ .Destination }}{{ printf "\n" }}{{ end }}' "$i"
+  echo
+done

extras/temp

@@ -0,0 +1 @@
+temp

notify_templates/notify_DSM.sh

@@ -0,0 +1,82 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_DSM_VERSION="v0.1"
+# INFO: ssmtp is deprecated - consider to use msmtp instead.
+#
+# Copy/rename this file to notify.sh to enable the notification snipppet.
+# mSMTP/sSMTP has to be installed and configured manually.
+# The existing DSM Notification Email configuration will be used automatically.
+# Modify to your liking - changing SendMailTo and Subject and content.
+
+MSMTP=$(which msmtp)
+SSMTP=$(which ssmtp)
+
+if [ -n "$MSMTP" ] ; then
+	MailPkg=$MSMTP
+elif [ -n "$SSMTP" ] ; then
+	MailPkg=$SSMTP
+else
+	echo "No msmtp or ssmtp binary found in PATH: $PATH" ; exit 1
+fi
+
+FromHost=$(hostname)
+
+trigger_notification() {
+CfgFile="/usr/syno/etc/synosmtp.conf"
+
+# User variables:
+# Automatically sends to your usual destination for synology DSM notification emails.
+# You can also manually override by assigning something else to SendMailTo below.
+SendMailTo=$(grep 'eventmail1' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')
+#SendMailTo="me@mydomain.com"
+
+SubjectTag=$(grep 'eventsubjectprefix' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')
+SenderName=$(grep 'smtp_from_name' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')
+SenderMail=$(grep 'smtp_from_mail' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')
+SenderMail=${SenderMail:-$(grep 'eventmail1' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')}
+
+$MailPkg $SendMailTo << __EOF
+From: "$SenderName" <$SenderMail>
+date:$(date -R)
+To: <$SendMailTo>
+Subject: $SubjectTag $MessageTitle $FromHost
+Content-Type: text/plain; charset=UTF-8; format=flowed
+Content-Transfer-Encoding: 7bit
+
+$MessageBody
+ From $SenderName
+__EOF
+# This ensures DSM's container manager will also see the update
+/var/packages/ContainerManager/target/tool/image_upgradable_checker
+}
+
+send_notification() {
+		[ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+		UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
+		printf "\nSending email notification.\n"
+
+		MessageTitle="Updates available on"
+		# Setting the MessageBody variable here.
+		printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n\n$UpdToString"
+
+		trigger_notification
+}
+
+### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+		printf "\nSending email dockcheck notification.\n"
+
+		MessageTitle="New version of dockcheck available on"
+		# Setting the MessageBody variable here.
+		printf -v MessageBody "Installed version: $1\nLatest version: $2\n\nChangenotes: $3\n"
+
+    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_DSM.sh"
+    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_DSM_VERSION/s/NOTIFY_DSM_VERSION=//p" | tr -d '"')"
+    if [[ "$NOTIFY_DSM_VERSION" != "$LatestNotifyRelease" ]] ; then
+        printf -v NotifyUpdate "\n\nnotify_DSM.sh update avialable:\n $NOTIFY_DSM_VERSION -> $LatestNotifyRelease\n"
+        MessageBody="${MessageBody}${NotifyUpdate}"
+    fi
+
+		trigger_notification
+}

notify_templates/notify_apprise.sh

@@ -0,0 +1,55 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_APPRISE_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Modify to fit your setup - if API, set AppriseURL to your Apprise ip/domain.
+
+FromHost=$(hostname)
+
+trigger_notification() {
+
+   ### Modify to fit your setup:
+   apprise -vv -t "$MessageTitle" -b "$MessageBody" \
+      mailto://myemail:mypass@gmail.com \
+      mastodons://{token}@{host} \
+      pbul://o.gn5kj6nfhv736I7jC3cj3QLRiyhgl98b \
+      tgram://{bot_token}/{chat_id}/
+
+   ### If you use the Apprise-API - Comment out the apprise command above.
+   ### Uncomment the AppriseURL and the curl-line below:
+   # AppriseURL="http://apprise.mydomain.tld:1234/notify/apprise"
+   # curl -X POST -F "title=$MessageTitle" -F "body=$MessageBody" -F "tags=all" $AppriseURL
+}
+
+send_notification() {
+    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
+    printf "\nSending Apprise notification\n"
+
+    MessageTitle="$FromHost - updates available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
+
+    trigger_notification
+}
+
+### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+    printf "\nSending Apprise dockcheck notification\n"
+
+    MessageTitle="$FromHost - New version of dockcheck available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
+
+    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_apprise.sh"
+    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_APPRISE_VERSION/s/NOTIFY_APPRISE_VERSION=//p" | tr -d '"')"
+    if [[ "$NOTIFY_APPRISE_VERSION" != "$LatestNotifyRelease" ]] ; then
+        printf -v NotifyUpdate "\n\nnotify_apprise.sh update avialable:\n $NOTIFY_APPRISE_VERSION -> $LatestNotifyRelease\n"
+        MessageBody="${MessageBody}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}

notify_templates/notify_discord.sh

@@ -0,0 +1,43 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_DISCORD_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Modify to fit your setup - set DiscordWebhookUrl
+
+FromHost=$(hostname)
+
+trigger_notification() {
+    # Modify to fit your setup:
+    DiscordWebhookUrl="PasteYourFullDiscordWebhookURL"
+
+    MsgBody="{\"username\":\"$FromHost\",\"content\":\"$MessageBody\"}"
+    curl -sS -o /dev/null --fail -X POST -H "Content-Type: application/json" -d "$MsgBody" "$DiscordWebhookUrl"
+}
+
+send_notification() {
+    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
+    printf "\nSending Discord notification\n"
+    # Setting the MessageBody variable here.
+    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
+
+    trigger_notification
+}
+
+### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+    printf "\nSending Discord dockcheck notification\n"
+    MessageBody="$FromHost - New version of dockcheck available: \n Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
+
+    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_discord.sh"
+    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_DISCORD_VERSION/s/NOTIFY_DISCORD_VERSION=//p" | tr -d '"')"
+    if [[ "$NOTIFY_DISCORD_VERSION" != "$LatestNotifyRelease" ]] ; then
+        printf -v NotifyUpdate "\n\nnotify_discord.sh update avialable:\n $NOTIFY_DISCORD_VERSION -> $LatestNotifyRelease\n"
+        MessageBody="${MessageBody}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}

notify_templates/notify_generic.sh

@@ -0,0 +1,44 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_GENERIC_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# generic sample, the "Hello World" of notification addons
+
+FromHost=$(hostname)
+
+trigger_notification()  {
+    # Modify to fit your setup:
+    printf "\n$MessageTitle\n"
+    printf "\n$MessageBody\n"
+}
+
+send_notification() {
+    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
+    # platform specific notification code would go here
+    printf "\n%bGeneric notification addon:%b" "$c_green" "$c_reset"
+    MessageTitle="$FromHost - updates available."
+    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
+
+    trigger_notification
+}
+
+### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+    printf "\nGeneric dockcheck notification\n"
+
+    MessageTitle="$FromHost - New version of dockcheck available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
+
+    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_generic.sh"
+    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_GENERIC_VERSION/s/NOTIFY_GENERIC_VERSION=//p" | tr -d '"')"
+    if [[ "$NOTIFY_GENERIC_VERSION" != "$LatestNotifyRelease" ]] ; then
+        printf -v NotifyUpdate "\n\nnotify_generic.sh update avialable:\n $NOTIFY_GENERIC_VERSION -> $LatestNotifyRelease\n"
+        MessageBody="${MessageBody}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}

notify_templates/notify_gotify.sh

@@ -0,0 +1,61 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_GOTIFY_VERSION="v0.2"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Modify to fit your setup - set GotifyUrl and GotifyToken.
+
+FromHost=$(hostname)
+
+trigger_notification() {
+    # Modify to fit your setup:
+    GotifyToken="Your Gotify token here"
+    GotifyUrl="https://api.gotify/message?token=${GotifyToken}"
+
+    if [[ "$PrintMarkdownURL" == true ]]; then
+        ContentType="text/markdown"
+    else
+        ContentType="text/plain"
+    fi
+
+    JsonData=$( jq -n \
+                  --arg body "$MessageBody" \
+                  --arg title "$MessageTitle" \
+                  --arg type "$ContentType" \
+                  '{message: $body, title: $title, priority: 5, extras: {"client::display": {"contentType": $type}}}' )
+
+    curl -s -S --data "${JsonData}" -H 'Content-Type: application/json' -X POST "${GotifyUrl}" 1> /dev/null
+}
+
+send_notification() {
+    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
+    # platform specific notification code would go here
+    printf "\nSending Gotify notification\n"
+
+    # Setting the MessageTitle and MessageBody variable here.
+    MessageTitle="${FromHost} - updates available."
+    printf -v MessageBody "Containers on $FromHost with updates available:\n$UpdToString"
+
+    trigger_notification
+}
+
+### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+    printf "\nSending Gotify dockcheck notification\n"
+
+    MessageTitle="$FromHost - New version of dockcheck available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
+
+    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_gotify.sh"
+    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_GOTIFY_VERSION/s/NOTIFY_GOTIFY_VERSION=//p" | tr -d '"')"
+    if [[ "$NOTIFY_GOTIFY_VERSION" != "$LatestNotifyRelease" ]] ; then
+        printf -v NotifyUpdate "\n\nnotify_gotify.sh update avialable:\n $NOTIFY_GOTIFY_VERSION -> $LatestNotifyRelease\n"
+        MessageBody="${MessageBody}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}

notify_templates/notify_matrix.sh

@@ -0,0 +1,51 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_MATRIX_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Modify to fit your setup - set MatrixServer, Room_id and AccessToken
+
+FromHost=$(hostname)
+
+trigger_notification() {
+    # Modify to fit your setup:
+    AccessToken="Your Matrix token here"
+    Room_id="Enter Room_id here"
+    MatrixServer="Enter Your HomeServer URL"
+    MsgBody="{\"msgtype\":\"m.text\",\"body\":\"$MessageBody\"}"
+
+    # URL Example:  https://matrix.org/_matrix/client/r0/rooms/!xxxxxx:example.com/send/m.room.message?access_token=xxxxxxxx
+    curl -sS -o /dev/null --fail -X POST "$MatrixServer/_matrix/client/r0/rooms/$Room_id/send/m.room.message?access_token=$AccessToken" -H 'Content-Type: application/json' -d "$MsgBody"
+}
+
+send_notification() {
+    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
+    # platform specific notification code would go here
+    printf "\nSending Matrix notification\n"
+
+    # Setting the MessageBody variable here.
+    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
+
+    trigger_notification
+}
+
+### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+    printf "\nSending Matrix dockcheck notification\n"
+
+    MessageTitle="$FromHost - New version of dockcheck available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
+
+    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_matrix.sh"
+    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_MATRIX_VERSION/s/NOTIFY_MATRIX_VERSION=//p" | tr -d '"')"
+    if [[ "$NOTIFY_MATRIX_VERSION" != "$LatestNotifyRelease" ]] ; then
+        printf -v NotifyUpdate "\n\nnotify_matrix.sh update avialable:\n $NOTIFY_MATRIX_VERSION -> $LatestNotifyRelease\n"
+        MessageBody="${MessageBody}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}

notify_templates/notify_ntfy-sh.sh

@@ -0,0 +1,57 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_NTFYSH_VERSION="v0.2"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Setup app and subscription at https://ntfy.sh
+# Use your unique Topic Name in the URL below.
+
+FromHost=$(hostname)
+
+trigger_notification() {
+    # Modify to fit your setup:
+    NtfyUrl="ntfy.sh/YourUniqueTopicName"
+
+    if [[ "$PrintMarkdownURL" == true ]]; then
+        ContentType="Markdown: yes"
+    else
+        ContentType="Markdown: no" #text/plain
+    fi
+
+    curl -sS -o /dev/null --show-error --fail \
+      -H "Title: $MessageTitle" \
+      -H "$ContentType"      \
+      -d "$MessageBody" \
+      "$NtfyUrl"
+}
+
+send_notification() {
+    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
+    printf "\nSending ntfy.sh notification\n"
+
+    MessageTitle="$FromHost - updates available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
+
+    trigger_notification
+}
+
+### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+    printf "\nSending ntfy.sh dockcheck notification\n"
+
+    MessageTitle="$FromHost - New version of dockcheck available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
+
+    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_ntfy-sh.sh"
+    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_NTFYSH_VERSION/s/NOTIFY_NTFYSH_VERSION=//p" | tr -d '"')"
+    if [[ "$NOTIFY_NTFYSH_VERSION" != "$LatestNotifyRelease" ]] ; then
+        printf -v NotifyUpdate "\n\nnotify_ntfy-sh.sh update avialable:\n $NOTIFY_NTFYSH_VERSION -> $LatestNotifyRelease\n"
+        MessageBody="${MessageBody}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}

notify_templates/notify_pushbullet.sh

@@ -0,0 +1,51 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_PUSHBULLET_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Requires jq installed and in PATH.
+# Modify to fit your setup - set Url and Token.
+
+FromHost=$(hostname)
+
+trigger_notification() {
+    # Modify to fit your setup:
+    PushUrl="https://api.pushbullet.com/v2/pushes"
+    PushToken="Your Pushbullet token here"
+
+    # Requires jq to process json data
+    jq -n --arg title "$MessageTitle" --arg body "$MessageBody" '{body: $body, title: $title, type: "note"}' | curl -sS -o /dev/null --show-error --fail -X POST -H "Access-Token: $PushToken" -H "Content-type: application/json" $PushUrl -d @-
+}
+
+send_notification() {
+    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
+    # platform specific notification code would go here
+    printf "\nSending pushbullet notification\n"
+
+    MessageTitle="$FromHost - updates available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
+
+    trigger_notification
+}
+
+### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+    printf "\nSending pushbullet dockcheck notification\n"
+
+    MessageTitle="$FromHost - New version of dockcheck available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
+
+    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_pushbullet.sh"
+    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_PUSHBULLET_VERSION/s/NOTIFY_PUSHBULLET_VERSION=//p" | tr -d '"')"
+    if [[ "$NOTIFY_PUSHBULLET_VERSION" != "$LatestNotifyRelease" ]] ; then
+        printf -v NotifyUpdate "\n\nnotify_pushbullet.sh update avialable:\n $NOTIFY_PUSHBULLET_VERSION -> $LatestNotifyRelease\n"
+        MessageBody="${MessageBody}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}

notify_templates/notify_pushover.sh

@@ -0,0 +1,57 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_PUSHOVER_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Requires jq installed and in PATH.
+# Modify to fit your setup - set Url and Token.
+
+FromHost=$(hostname)
+
+trigger_notification() {
+    # Modify to fit your setup:
+    PushoverUrl="https://api.pushover.net/1/messages.json"
+    PushoverUserKey="Your Pushover User Key Here"
+    PushoverToken="Your Pushover API Token Here"
+
+    # Sending the notification via Pushover
+    curl -sS -o /dev/null --show-error --fail -X POST \
+        -F "token=$PushoverToken" \
+        -F "user=$PushoverUserKey" \
+        -F "title=$MessageTitle" \
+        -F "message=$MessageBody" \
+        $PushoverUrl
+}
+
+send_notification() {
+    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
+    # platform specific notification code would go here
+    printf "\nSending pushover notification\n"
+
+    MessageTitle="$FromHost - updates available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
+
+    trigger_notification
+}
+
+### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+    printf "\nSending pushover dockcheck notification\n"
+
+    MessageTitle="$FromHost - New version of dockcheck available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
+
+    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_pushover.sh"
+    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_PUSHOVER_VERSION/s/NOTIFY_PUSHOVER_VERSION=//p" | tr -d '"')"
+    if [[ "$NOTIFY_PUSHOVER_VERSION" != "$LatestNotifyRelease" ]] ; then
+        printf -v NotifyUpdate "\n\nnotify_pushover.sh update avialable:\n $NOTIFY_PUSHOVER_VERSION -> $LatestNotifyRelease\n"
+        MessageBody="${MessageBody}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}

notify_templates/notify_slack.sh

@@ -0,0 +1,52 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_SLACK_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh in the same directory as dockcheck.sh to enable the notification snippet.
+# Setu app and token at https://api.slack.com/tutorials/tracks/posting-messages-with-curl
+# Add your AccessToken and ChannelID below
+
+FromHost=$(hostname)
+
+trigger_notification() {
+    # Modify to fit your setup:
+    AccessToken="xoxb-not-a-real-token-this-will-not-work"
+    ChannelID="C123456"
+    SlackUrl="https://slack.com/api/chat.postMessage"
+
+    curl -sS -o /dev/null --show-error --fail \
+      -d "text=$MessageBody" -d "channel=$ChannelID" \
+      -H "Authorization: Bearer $AccessToken" \
+      -X POST $SlackUrl
+}
+
+send_notification() {
+    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
+    printf "\nSending Slack notification\n"
+
+    MessageTitle="$FromHost - updates available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
+
+    trigger_notification
+}
+
+### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+    printf "\nSending Slack dockcheck notification\n"
+
+    MessageTitle="$FromHost - New version of dockcheck available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
+
+    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_slack.sh"
+    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_SLACK_VERSION/s/NOTIFY_SLACK_VERSION=//p" | tr -d '"')"
+    if [[ "$NOTIFY_SLACK_VERSION" != "$LatestNotifyRelease" ]] ; then
+        printf -v NotifyUpdate "\n\nnotify_slack.sh update avialable:\n $NOTIFY_SLACK_VERSION -> $LatestNotifyRelease\n"
+        MessageBody="${MessageBody}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}

notify_templates/notify_smtp.sh

@@ -0,0 +1,71 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_SMTP_VERSION="v0.1"
+# INFO: ssmtp is depcerated - consider to use msmtp instead.
+#
+# Copy/rename this file to notify.sh to enable the notification snipppet.
+# mSMTP/sSMTP has to be installed and configured manually.
+# Modify to fit your setup - changing SendMailFrom, SendMailTo, SubjectTag
+
+MSMTP=$(which msmtp)
+SSMTP=$(which ssmtp)
+
+if [ -n "$MSMTP" ] ; then
+	MailPkg=$MSMTP
+elif [ -n "$SSMTP" ] ; then
+	MailPkg=$SSMTP
+else
+	echo "No msmtp or ssmtp binary found in PATH: $PATH" ; exit 1
+fi
+
+FromHost=$(hostname)
+
+trigger_notification() {
+# User variables:
+SendMailFrom="me@mydomain.tld"
+SendMailTo="me@mydomain.tld"
+SubjectTag="dockcheck"
+
+$MailPkg $SendMailTo << __EOF
+From: "$FromHost" <$SendMailFrom>
+date:$(date -R)
+To: <$SendMailTo>
+Subject: [$SubjectTag] $MessageTitle $FromHost
+Content-Type: text/plain; charset=UTF-8; format=flowed
+Content-Transfer-Encoding: 7bit
+
+$MessageBody
+
+__EOF
+}
+
+send_notification() {
+		[ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+		UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
+		printf "\nSending email notification.\n"
+
+		MessageTitle="Updates available on"
+		# Setting the MessageBody variable here.
+		printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n\n$UpdToString"
+
+		trigger_notification
+}
+
+### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+		printf "\nSending email dockcheck notification.\n"
+
+		MessageTitle="New version of dockcheck available on"
+		# Setting the MessageBody variable here.
+		printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
+
+    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_smtp.sh"
+    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_SMTP_VERSION/s/NOTIFY_SMTP_VERSION=//p" | tr -d '"')"
+    if [[ "$NOTIFY_SMTP_VERSION" != "$LatestNotifyRelease" ]] ; then
+        printf -v NotifyUpdate "\n\nnotify_smtp.sh update avialable:\n $NOTIFY_SMTP_VERSION -> $LatestNotifyRelease\n"
+        MessageBody="${MessageBody}${NotifyUpdate}"
+    fi
+
+		trigger_notification
+}

notify_templates/notify_telegram.sh

@@ -0,0 +1,58 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_TELEGRAM_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Modify to fit your setup - set TelegramChatId and TelegramToken.
+
+FromHost=$(hostname)
+
+trigger_notification() {
+
+    if [[ "$PrintMarkdownURL" == true ]]; then
+        ParseMode="Markdown"
+    else
+        ParseMode="HTML"
+    fi
+
+    # Modify to fit your setup:
+    TelegramToken="Your Telegram token here"
+    TelegramChatId="Your Telegram ChatId here"
+    TelegramUrl="https://api.telegram.org/bot$TelegramToken"
+    TelegramTopicID=12345678 ## Set to 0 if not using specific topic within chat
+    TelegramData="{\"chat_id\":\"$TelegramChatId\",\"text\":\"$MessageBody\",\"message_thread_id\":\"$TelegramTopicID\",\"disable_notification\": false}"
+
+    curl -sS -o /dev/null --fail -X POST "$TelegramUrl/sendMessage" -H 'Content-Type: application/json' -d "$TelegramData"
+}
+
+send_notification() {
+    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
+    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
+    # platform specific notification code would go here
+    printf "\nSending Telegram notification\n"
+
+    # Setting the MessageBody variable here.
+    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
+
+    trigger_notification
+}
+
+### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+    printf "\nSending Telegram dockcheck notification\n"
+
+    MessageTitle="$FromHost - New version of dockcheck available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "$FromHost - New version of dockcheck available.\n\nInstalled version: $1 \nLatest version: $2 \n\nChangenotes: $3"
+
+    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_telegram.sh"
+    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_TELEGRAM_VERSION/s/NOTIFY_TELEGRAM_VERSION=//p" | tr -d '"')"
+    if [[ "$NOTIFY_TELEGRAM_VERSION" != "$LatestNotifyRelease" ]] ; then
+        printf -v NotifyUpdate "\n\nnotify_telegram.sh update avialable:\n $NOTIFY_TELEGRAM_VERSION -> $LatestNotifyRelease\n"
+        MessageBody="${MessageBody}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}

notify_templates/urls.list

@@ -0,0 +1,49 @@
+# This is a list of container names and releasenote urls, separated by space.
+# Modify, add and (if necessary) remove to fit your needs.
+# Additions are welcome! Append your list to the git-repo, use generic names and sensible urls.
+
+apprise-api https://github.com/linuxserver/docker-apprise-api/releases
+homer https://github.com/bastienwirtz/homer/releases
+nginx https://github.com/docker-library/official-images/blob/master/library/nginx
+vaultwarden-server https://github.com/dani-garcia/vaultwarden/releases
+bruceforce-vaultwarden-backup https://github.com/Bruceforce/vaultwarden-backup/blob/main/CHANGELOG.md
+actual_server https://actualbudget.org/blog
+gotify https://github.com/gotify/server/releases
+traefik https://github.com/traefik/traefik/releases
+caddy https://github.com/caddyserver/caddy/releases
+homarr https://github.com/homarr-labs/homarr/releases
+dozzle https://github.com/amir20/dozzle/releases
+beszel https://github.com/henrygd/beszel/releases
+forgejo https://codeberg.org/forgejo/forgejo/releases
+dockge https://github.com/louislam/dockge/releases
+cup https://github.com/sergi0g/cup/releases
+
+calibre https://github.com/linuxserver/docker-calibre/releases
+calibre-web https://github.com/linuxserver/docker-calibre-web/releases
+readarr https://github.com/Readarr/Readarr/releases
+audiobookshelf https://github.com/advplyr/audiobookshelf/releases
+
+gluetun https://github.com/qdm12/gluetun/releases
+bazarr https://github.com/morpheus65535/bazarr/releases
+bazarr-ls https://github.com/linuxserver/docker-bazarr/releases
+prowlarr https://github.com/Prowlarr/Prowlarr/releases
+prowlarr-ls https://github.com/linuxserver/docker-prowlarr/releases
+recyclarr https://github.com/recyclarr/recyclarr/releases
+sabnzbd https://github.com/linuxserver/docker-sabnzbd/releases
+sonarr https://github.com/linuxserver/docker-sonarr/releases
+radarr https://github.com/linuxserver/docker-radarr/releases
+lidarr https://github.com/linuxserver/docker-lidarr/releases
+jellyseerr https://github.com/Fallenbagel/jellyseerr/releases
+jellyfin https://github.com/jellyfin/jellyfin/releases
+tautulli https://github.com/Tautulli/Tautulli/releases
+cleanuperr https://github.com/flmorg/cleanuperr/releases
+slskd https://github.com/slskd/slskd/releases
+
+home-assistant https://github.com/home-assistant/docker/releases
+zigbee2mqtt https://github.com/Koenkk/zigbee2mqtt/releases
+mqtt https://github.com/eclipse/mosquitto/tags
+
+bookstack https://github.com/BookStackApp/BookStack/releases
+lubelogger https://github.com/hargata/lubelog/releases
+mealie https://github.com/mealie-recipes/mealie/releases
+flatnotes https://github.com/dullage/flatnotes/releases