versionbump

info: Permission checks, now compose up on whole stack, -M markdown option added.
Update README.md
2026-04-17 18:07:46 +00:00 · 2025-05-03 10:20:32 +02:00 · 2025-05-03 10:16:07 +02:00 · 2025-05-03 09:56:21 +02:00 · 2025-05-03 00:20:39 +02:00 · 2025-05-02 21:40:24 +02:00
34 changed files with 2114 additions and 239 deletions
--- a/.gitignore
+++ b/.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
--- a/.pre-commit-config.yaml
+++ b/.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']
--- a/README.md
+++ b/README.md
@@ -1,8 +1,7 @@
 <p align="center">
  <img src="extras/dockcheck_logo_by_booYah187.png" width="160" title="dockcheck">
 </p>
-<p align="center"> 
-  <img src="https://img.shields.io/badge/coded%20by%20Human-100%25-yellow?style=flat-square" alt="No AI!">
+<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">
@@ -11,47 +10,68 @@
  <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>

-<h3 align="center">A script checking updates for docker images <b>without pulling</b><br>Then selectively auto-update containers.</h3>
-<h4 align="center">With features like excluding specific containers, filter by name, auto-prune dangling images and more.</h4</h3>
+<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>

-### :pushpin: Recent changes:
- **v0.2.5**: Added a new option `-s` to include stopped containers in the check for updates.
- **v0.2.4**: Fixed a bug with the Exclude-logic to only exclude exact matches. Added a counter.
- **v0.2.3**: Added a self updating function (curl/git) and a ugly changenote-message for updates.
- **v0.2.2**: Fixed breaking errors with multi-compose, odd breakage and working dir error.
- **v0.2.1**: Added option to exclude a list of containers.
- **v0.2.1**: Added multi-compose support (eg. override). 
- **v0.2.0**: Fixed error with container:tag definition. 
- **v0.1.9:** Fixed custom env-support. 
 ___
+## :bell: Changelog
+
+- **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) added 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
+- **v0.6.0**: Refactored a lot of code, cleaner logic and syntax, safer variables.
+    - Safer bash options with `set -euo pipefail`, `shopt -s nullglob` and `failglob`.
+    - Added a `default.conf` for user settings - persistent through updates.
+    - Added `notify_slack.sh` template for slack curl api.

-## Dependencies:
-Running docker (duh) and compose, either standalone or plugin.   
-[`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`
 ___


 ![](extras/example.gif)

-## `dockcheck.sh`
+## :mag_right: `dockcheck.sh`
 ```
 $ ./dockcheck.sh -h
 Syntax:     dockcheck.sh [OPTION] [part of name to filter]
-Example:    dockcheck.sh -a -e nextcloud,heimdall
+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 stack restart after update. Caution: restarts once for every updated container within stack.
+-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.
-e     Exclude containers, separated by comma.
 -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:
+### Basic example:
 ```
 $ ./dockcheck.sh
 . . .
@@ -64,34 +84,192 @@ Containers with updates available:
 2) syncthing
 3) whoogle-search

-
 Choose what containers to update:
 Enter number(s) separated by comma, [a] for all - [q] to quit:
-
 ```
-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.

-### `-r flag` :warning: disclaimer and warning:
-**Wont auto-update the containers, only their images. (compose is recommended)**   
+___
+
+## :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:
+
+### :small_orange_diamond: Using dockcheck.sh with the Synology DSM
+If you run your container through the *Container Manager GUI* - only notifications are supported.  
+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).
+
+### :small_orange_diamond: Prometheus and node_exporter
+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:
+```
+dockcheck.sh -c /path/to/exporter/directory
+```
+
+See the [README.md](./addons/prometheus/README.md) for more detailed information on how to set it up!  
+<sub><sup>Contributed by [tdralle](https://github.com/tdralle).</sup></sub>  
+
+### :small_orange_diamond: Zabbix config to monitor docker image updates
+If you already use Zabbix - this config will Shows number of available docker image updates on host.  
+Example: *2 Docker Image updates on host-xyz*  
+See project: [thetorminal/zabbix-docker-image-updates](https://github.com/thetorminal/zabbix-docker-image-updates)
+
+### :small_orange_diamond: Serve REST API to list all available updates
+A custom python script to serve a REST API to get pulled into other monitoring tools like [homepage](https://github.com/gethomepage/homepage).  
+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.restart-stack: true
+      mag37.dockcheck.update: true
+```
+- `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).
+- `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.
+
+## :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 manually stopped, removed and created again to run on the new image.

-### :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.
+## :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`.

-## `dc_brief.sh`
-Just a brief, slimmed down version of the script to only print what containers got updates, no updates or errors.
-
-# License
+## :scroll: License
 dockcheck is created and released under the [GNU GPL v3.0](https://www.gnu.org/licenses/gpl-3.0-standalone.html) license.
+
+## :heartpulse: Sponsorlist
+
+- [avegy](https://github.com/avegy)
+- [eichhorn](https://github.com/eichhorn)
+
 ___

-## Check out a spinoff brother-project:
-### [Palleri/DCW](https://github.com/Palleri/DCW) for a WebUI-front with exporters and notifications.
-
-## Special Thanks:
- :bison: [t0rnis](https://github.com/t0rnis)   
- :leopard: [Palleri](https://github.com/Palleri)
+### :floppy_disk: The [story](https://mag37.org/posts/project_dockcheck/) behind it. 1 year in retrospect.
--- a/addons/DSM/README.md
+++ b/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).
--- a/addons/DSM/dsm1.png
+++ b/addons/DSM/dsm1.png
--- a/addons/DSM/dsm2.png
+++ b/addons/DSM/dsm2.png
--- a/addons/DSM/dsm3.png
+++ b/addons/DSM/dsm3.png
--- a/addons/prometheus/README.md
+++ b/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: "{{ $labels.instance }} has not updated the dockcheck statistics for more than 3 days."
+```
+
+There is a reference Grafana dashboard in [grafana/grafana_dashboard.json](./grafana/grafana_dashboard.json).
+
+![](./grafana/grafana_dashboard.png)
--- a/addons/prometheus/grafana/grafana_dashboard.json
+++ b/addons/prometheus/grafana/grafana_dashboard.json
@@ -0,0 +1,382 @@
+{
+  "__inputs": [
+    {
+      "name": "DS_PROMETHEUS",
+      "label": "prometheus",
+      "description": "",
+      "type": "datasource",
+      "pluginId": "prometheus",
+      "pluginName": "Prometheus"
+    }
+  ],
+  "__elements": {},
+  "__requires": [
+    {
+      "type": "grafana",
+      "id": "grafana",
+      "name": "Grafana",
+      "version": "11.4.0"
+    },
+    {
+      "type": "datasource",
+      "id": "prometheus",
+      "name": "Prometheus",
+      "version": "1.0.0"
+    },
+    {
+      "type": "panel",
+      "id": "table",
+      "name": "Table",
+      "version": ""
+    }
+  ],
+  "annotations": {
+    "list": [
+      {
+        "builtIn": 1,
+        "datasource": {
+          "type": "grafana",
+          "uid": "-- Grafana --"
+        },
+        "enable": true,
+        "hide": true,
+        "iconColor": "rgba(0, 211, 255, 1)",
+        "name": "Annotations & Alerts",
+        "type": "dashboard"
+      }
+    ]
+  },
+  "editable": true,
+  "fiscalYearStartMonth": 0,
+  "graphTooltip": 0,
+  "id": null,
+  "links": [],
+  "panels": [
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${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": ""
+}
--- a/addons/prometheus/grafana/grafana_dashboard.png
+++ b/addons/prometheus/grafana/grafana_dashboard.png
--- a/addons/prometheus/prometheus_collector.sh
+++ b/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"
+}
--- a/default.config
+++ b/default.config
@@ -0,0 +1,24 @@
+### 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 stack restart after update. Caution.
+#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
--- a/dockcheck.sh
+++ b/dockcheck.sh
@@ -1,146 +1,351 @@
 #!/usr/bin/env bash
-VERSION="v0.2.5"
-### ChangeNotes: Added an -s option to include stopped contianers in the check.
+VERSION="v0.6.3"
+### ChangeNotes: Permission checks, now compose up on whole stack, -M markdown option added.
 Github="https://github.com/mag37/dockcheck"
 RawUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/dockcheck.sh"

-### Variables for self updating
+set -uo pipefail
+shopt -s nullglob
+shopt -s failglob
+
+# Variables for self updating
 ScriptArgs=( "$@" )
 ScriptPath="$(readlink -f "$0")"
-ScriptName="$(basename "$ScriptPath")"
 ScriptWorkDir="$(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 $RawUrl | sed -n "/ChangeNotes/s/### ChangeNotes: //p")"
+# Check if there's a new release of the script
+LatestRelease="$(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")"

-### Help Function:
+# 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 "Example:    dockcheck.sh -a -e nextcloud,heimdall"
+  echo "Syntax:     dockcheck.sh [OPTION] [part of name to filter]"
+  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 "-e     Exclude containers, separated by comma."
-  echo "-p     Auto-Prune dangling images after update."
-  echo "-r     Allow updating images for docker run, wont update the container"
-  echo "-s     Include stopped containers in the check. (Logic: docker ps -a)"
+  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 stack restart after update. Caution: restarts once for every updated container within stack."
+  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"
 }

-Stopped=""
-while getopts "aynprhse:" 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:-}
+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 "ayfhiIlmMnprsuvc:e:d:t:x:" options; do
  case "${options}" in
-    a|y) UpdYes="yes" ;;
-    n) UpdYes="no" ;;
-    r) DrUp="yes" ;;
-    p) PruneQ="yes" ;;
-    e) Exclude=${OPTARG} ;;
-    s) Stopped="-a" ;;
-    h|*) Help ; exit 0 ;;
+    a|y) AutoMode=true ;;
+    c)   CollectorTextFileDirectory="${OPTARG}" ;;
+    d)   DaysOld=${OPTARG} ;;
+    e)   Exclude=${OPTARG} ;;
+    f)   ForceRestartStacks=true ;;
+    i)   Notify=true ;;
+    I)   PrintReleaseURL=true ;;
+    l)   OnlyLabel=true ;;
+    m)   MonoMode=true ;;
+    M)   PrintMarkdownURL=true ;;
+    n)   DontUpdate=true; AutoMode=true;;
+    p)   AutoPrune=true ;;
+    r)   DRunUp=true ;;
+    s)   Stopped="-a" ;;
+    t)   Timeout="${OPTARG}" ;;
+    u)   AutoSelfUpdate=true ;;
+    v)   printf "%s\n" "$VERSION"; exit 0 ;;
+    x)   MaxAsync=${OPTARG} ;;
+    h|*) Help; exit 2 ;;
  esac
 done
 shift "$((OPTIND-1))"

-self_update_git() {
-  cd "$ScriptWorkDir" || { printf "Path error, skipping update.\n" ; return ; }
-  [[ $(builtin type -P git) ]] || { printf "Git not installed, skipping update.\n" ; return ; }
-  ScriptUpstream=$(git rev-parse --abbrev-ref --symbolic-full-name "@{upstream}") || { printf "Script not in git directory, choose a different method.\n" ; self_update_select ; return ; }
-  git fetch
-  [ -n "$(git diff --name-only "$ScriptUpstream" "$ScriptName")" ] && {
-    printf "%s\n" "Pulling the latest version."
-   # git checkout "$ScriptUpstream"
-    git pull --force
-    printf "%s\n" "--- starting over with the updated version ---"
-    cd - || { printf "Path error.\n" ; return ; }
-    exec "$ScriptPath" "${ScriptArgs[@]}" # run the new script with old arguments
-    exit 1 # exit the old instance
-  }
-  echo "Local is already latest."
-}
+# Set $1 to a variable for name filtering later
+SearchName="${1:-}"
+
+# Setting up options and sourcing functions
+if [[ "$DontUpdate" == true ]]; then AutoMode=true; fi
+if [[ "$MonoMode" == true ]]; then declare c_{red,green,yellow,blue,teal,reset}=""; fi
+if [[ "$Notify" == true ]]; then
+  if [[ -s "${ScriptWorkDir}/notify.sh" ]]; then
+    source "${ScriptWorkDir}/notify.sh"
+  else Notify=false
+  fi
+fi
+if [[ -n "$Exclude" ]]; then
+  IFS=',' read -ra Excludes <<< "$Exclude"
+  unset IFS
+fi
+if [[ -n "$DaysOld" ]]; then
+  if ! [[ $DaysOld =~ ^[0-9]+$ ]]; then
+    printf "Days -d argument given (%s) is not a number.\n" "$DaysOld"
+    exit 2
+  fi
+fi
+if [[ -n "$CollectorTextFileDirectory" ]]; then
+  if ! [[ -d  $CollectorTextFileDirectory ]]; then
+    printf "The directory (%s) does not exist.\n" "$CollectorTextFileDirectory"
+    exit 2
+  else
+    source "${ScriptWorkDir}/addons/prometheus/prometheus_collector.sh"
+  fi
+fi
+
 self_update_curl() {
  cp "$ScriptPath" "$ScriptPath".bak
-  if [[ $(builtin type -P curl) ]]; then 
-    curl -L $RawUrl > "$ScriptPath" ; chmod +x "$ScriptPath"  
-    printf "%s\n" "--- starting over with the updated version ---"
+  if command -v curl &>/dev/null; then
+    curl -L $RawUrl > "$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 1 # exit the old instance
+    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" "${ScriptArgs[@]}" # run the new script with old arguments
+    exit 0 # exit the old instance
  else
-    printf "curl not available - download the update manually: %s \n" "$RawUrl"
-  fi
-}
-self_update_select() {
-  read -r -p "Choose update procedure (or do it manually) - git/curl/[no]: " SelfUpQ
-  if [[ "$SelfUpQ" == "git" ]]; then self_update_git ;
-  elif [[ "$SelfUpQ" == "curl" ]]; then self_update_curl ; 
-  else printf "Download it manually from the repo: %s \n\n" "$Github"
+    printf "\n%bcurl/wget not available %b- download the update manually: %b%s %b\n" "$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 [[ -z "$ChoiceClean" ]]; do
+  while [[ -z "${ChoiceClean:-}" ]]; do
    read -r -p "Enter number(s) separated by comma, [a] for all - [q] to quit: " Choice
-    if [[ "$Choice" =~ [qQnN] ]] ; then 
+    if [[ "$Choice" =~ [qQnN] ]]; then
      exit 0
-    elif [[ "$Choice" =~ [aAyY] ]] ; then
+    elif [[ "$Choice" =~ [aAyY] ]]; then
      SelectedUpdates=( "${GotUpdates[@]}" )
      ChoiceClean=${Choice//[,.:;]/ }
    else
      ChoiceClean=${Choice//[,.:;]/ }
-      for CC in $ChoiceClean ; do
-        if [[ "$CC" -lt 1 || "$CC" -gt $UpdCount ]] ; then # reset choice if out of bounds
-          echo "Number not in list: $CC" ; unset ChoiceClean ; break 1
+      for CC in $ChoiceClean; do
+        if [[ "$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[$CC-1]}" )
        fi
      done
    fi
  done
-  printf "\nUpdating containers:\n"
+  printf "\n%bUpdating container(s):%b\n" "$c_blue" "$c_reset"
  printf "%s\n" "${SelectedUpdates[@]}"
  printf "\n"
 }

-### Version check & initiate self update
-[[ "$VERSION" != "$LatestRelease" ]] && { printf "New version available! Local: %s - Latest: %s \n Change Notes: %s \n" "$VERSION" "$LatestRelease" "$LatestChanges" ; [[ -z "$UpdYes" ]] && self_update_select ; }
-
-### Set $1 to a variable for name filtering later.
-SearchName="$1"
-### Create array of excludes
-IFS=',' read -r -a Excludes <<< "$Exclude" ; unset IFS
-
-### Check if required binary exists in PATH or directory:
-if [[ $(builtin type -P "regctl") ]]; then regbin="regctl" ;
-elif [[ -f "./regctl" ]]; then regbin="./regctl" ;
-else
-  read -r -p "Required dependency 'regctl' missing, do you want it downloaded? y/[n] " GetDep
-  if [[ "$GetDep" =~ [yY] ]] ; then
-    ### Check arch:
-    case "$(uname --machine)" in
-      x86_64|amd64) architecture="amd64" ;;
-      arm64|aarch64) architecture="arm64";;
-      *) echo "Architecture not supported, exiting." ; exit 1;;
-    esac
-    RegUrl="https://github.com/regclient/regclient/releases/latest/download/regctl-linux-$architecture"
-    if [[ $(builtin type -P curl) ]]; then curl -L $RegUrl > ./regctl ; chmod +x ./regctl ; regbin="./regctl" ;
-    elif [[ $(builtin type -P wget) ]]; then wget $RegUrl -O ./regctl ; chmod +x ./regctl ; regbin="./regctl" ;
-    else
-      printf "%s\n" "curl/wget not available - get regctl manually from the repo link, quitting."
-    fi
+datecheck() {
+  ImageDate=$("$regbin" -v error image inspect "$RepoUrl" --format='{{.Created}}' | cut -d" " -f1)
+  ImageEpoch=$(date -d "$ImageDate" +%s 2>/dev/null) || ImageEpoch=$(date -f "%Y-%m-%d" -j "$ImageDate" +%s)
+  ImageAge=$(( ( $(date +%s) - ImageEpoch )/86400 ))
+  if [[ "$ImageAge" -gt "$DaysOld" ]]; then
+    return 0
  else
-    printf "%s\n" "Dependency missing, quitting."
-    exit 1
+    return 1
+  fi
+}
+
+progress_bar() {
+  QueCurrent="$1"
+  QueTotal="$2"
+  BarWidth=${BarWidth:-50}
+  ((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 "%s\n" "curl/wget not available - get $BinaryName manually from the repo link, exiting."; exit 1;
+  fi
+  [[ -f "$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/$AppName";
+  else
+    printf "%s\n" "Required dependency %b'%s'%b missing, do you want to install it?\n" "$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
-### final check if binary is correct
-$regbin version &> /dev/null  || { printf "%s\n" "regctl is not working - try to remove it and re-download it, exiting."; exit 1; }

-### Check docker compose binary:
-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
+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
@@ -148,114 +353,193 @@ else
  exit 1
 fi

-### Numbered List -function:
-options() {
-num=1
-for i in "${GotUpdates[@]}"; do
-  echo "$num) $i"
-  ((num++))
-done
-}
-
-### Listing typed exclusions:
-if [[ -n ${Excludes[*]} ]] ; then
-  printf "\n\033[0;34mExcluding these names:\033[0m\n"
+# 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

-### Check the image-hash of every running container VS the registry
-for i in $(docker ps $Stopped --filter "name=$SearchName" --format '{{.Names}}') ; do
-  ### Looping every item over the list of excluded names and skipping:
-  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+=("$i")
-  fi
-done
+# Variables for progress_bar function
+ContCount=$(docker ps $Stopped --filter "name=$SearchName" --format '{{.Names}}' | wc -l)
+RegCheckQue=0

-### Sort arrays alphabetically
-IFS=$'\n' 
-NoUpdates=($(sort <<<"${NoUpdates[*]}"))
-GotUpdates=($(sort <<<"${GotUpdates[*]}"))
-GotErrors=($(sort <<<"${GotErrors[*]}"))
+# Testing and setting timeout binary
+t_out=$(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 $i"
+      return
+    fi
+  done
+
+  local NoUpdates GotUpdates GotErrors
+  ImageId=$(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
+
+# 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
-### Define how many updates are available
+
+# Run the prometheus exporter function
+if [[ -n "${CollectorTextFileDirectory:-}" ]]; then
+  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\033[0;32mContainers on latest version:\033[0m\n"
+# 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
-  printf "\n\033[0;31mContainers with errors, wont get updated:\033[0m\n"
+if [[ -n ${GotErrors[*]:-} ]]; then
+  printf "\n%bContainers with errors, won't get updated:%b\n" "$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 ${GotUpdates[*]} ]] ; then 
-   printf "\n\033[0;33mContainers with updates available:\033[0m\n"
-   [[ -z "$UpdYes" ]] && options || printf "%s\n" "${GotUpdates[@]}"
+if [[ -n ${GotUpdates[*]:-} ]]; then
+  printf "\n%bContainers with updates available:%b\n" "$c_yellow" "$c_reset"
+  if [[ -s "$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 "Could not source notification function.\n"; }
 fi

-### Optionally get updates if there's any 
-if [ -n "$GotUpdates" ] ; then
-  if [ -z "$UpdYes" ] ; then
-  printf "\n\033[0;36mChoose what containers to update.\033[0m\n"
-  choosecontainers
+# Optionally get updates if there's any
+if [[ -n "${GotUpdates:-}" ]]; then
+  if [[ "$AutoMode" == false ]]; then
+    printf "\n%bChoose what containers to update.%b\n" "$c_teal" "$c_reset"
+    choosecontainers
  else
    SelectedUpdates=( "${GotUpdates[@]}" )
  fi
-  if [ "$UpdYes" == "${UpdYes#[Nn]}" ] ; then
+  if [[ "$DontUpdate" == false ]]; then
    NumberofUpdates="${#SelectedUpdates[@]}"
    CurrentQue=0
    for i in "${SelectedUpdates[@]}"
    do
      ((CurrentQue+=1))
      unset CompleteConfs
-      ContPath=$(docker inspect "$i" --format '{{ index .Config.Labels "com.docker.compose.project.working_dir" }}')
-      ContConfigFile=$(docker inspect "$i" --format '{{ index .Config.Labels "com.docker.compose.project.config_files" }}')
-      ContName=$(docker inspect "$i" --format '{{ index .Config.Labels "com.docker.compose.service" }}')
-      ContEnv=$(docker inspect "$i" --format '{{index .Config.Labels "com.docker.compose.project.environment_file" }}')
+      # Extract labels and metadata
+      ContLabels=$(docker inspect "$i" --format '{{json .Config.Labels}}')
      ContImage=$(docker inspect "$i" --format='{{.Config.Image}}')
-      ### Checking if compose-values are empty - hence started with docker run:
-      if [ -z "$ContPath" ] ; then 
-        if [ "$DrUp" == "yes" ] ; then
+      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=""
+
+      # 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\033[33;1m%s\033[0m has no compose labels, probably started with docker run - \033[33;1mskipping\033[0m\n\n" "$i"
+          printf "\n%b%s%b has no compose labels, probably started with docker run - %bskipping%b\n\n" "$c_yellow" "$i" "$c_reset" "$c_yellow" "$c_reset"
        fi
-        continue 
+        continue
      fi
-      ### Checking if "com.docker.compose.project.config_files" returns the full path to the config file or just the file name
-      if [[ $ContConfigFile = '/'* ]] ; then
-        ComposeFile="$ContConfigFile"
+      # 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
-        ComposeFile="$ContPath/$ContConfigFile"
+        CompleteConfs=$(for conf in ${ContConfigFile//,/ }; do printf -- "-f %s/%s " "$ContPath" "$conf"; done)
      fi
-      ### cd to the compose-file directory to account for people who use relative volumes, eg - ${PWD}/data:data
-      cd "$ContPath" || { echo "Path error - skipping $i" ; continue ; }
-      printf "\n\033[0;36mNow updating (%s/%s): \033[0;34m%s\033[0m\n" "$CurrentQue" "$NumberofUpdates" "$i"
-      docker pull "$ContImage"
-      ### Reformat for multi-compose:
-      IFS=',' read -r -a Confs <<< "$ComposeFile" ; unset IFS
-      for conf in "${Confs[@]}"; do CompleteConfs+="-f $conf " ; done 
-      
-      ### Check if the container got an environment file set, use it if so:
-      if [ -n "$ContEnv" ]; then 
-        $DockerBin ${CompleteConfs[@]} --env-file "$ContEnv" up -d "$ContName" # unquoted array to allow split - rework?
+      printf "\n%bNow updating (%s/%s): %b%s%b\n" "$c_teal" "$CurrentQue" "$NumberofUpdates" "$c_blue" "$i" "$c_reset"
+      # Checking if Label Only -option is set, and if container got the label
+      [[ "$OnlyLabel" == true ]] && { [[ "$ContUpdateLabel" != true ]] && { echo "No update label, skipping."; continue; } }
+      docker pull "$ContImage" || { printf "\n%bDocker error, exiting!%b\n" "$c_red" "$c_reset" ; exit 1; }
+      # 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
+      # Check if the whole stack should be restarted
+      if [[ "$ContRestartStack" == true ]] || [[ "$ForceRestartStacks" == true ]]; then
+        ${DockerBin} ${CompleteConfs} stop; ${DockerBin} ${CompleteConfs} ${ContEnvs} up -d
      else
-        $DockerBin ${CompleteConfs[@]} up -d "$ContName" # unquoted array to allow split - rework?
+        ${DockerBin} ${CompleteConfs} ${ContEnvs} up -d || { printf "\n%bDocker error, exiting!%b\n" "$c_red" "$c_reset" ; exit 1; }
      fi
    done
-    printf "\033[0;32mAll done!\033[0m\n"
-    [[ -z "$PruneQ" ]] && read -r -p "Would you like to prune dangling images? y/[n]: " PruneQ
-    [[ "$PruneQ" =~ [yY] ]] && docker image prune -f 
+    if [[ "$AutoPrune" == false ]] && [[ "$AutoMode" == false ]]; then printf "\n"; read -rep "Would you like to prune dangling images? y/[n]: " AutoPrune; fi
+    if [[ "$AutoPrune" == true ]] || [[ "$AutoPrune" =~ [yY] ]]; then docker image prune -f; fi
+    printf "\n%bAll done!%b\n" "$c_green" "$c_reset"
  else
    printf "\nNo updates installed, exiting.\n"
  fi
--- a/errorCheck.sh
+++ b/errorCheck.sh
@@ -1,27 +0,0 @@
-#!/usr/bin/env bash
-SearchName="$1"
-for i in $(docker ps --filter "name=$SearchName" --format '{{.Names}}') ; do  
-  echo "------------ $i ------------"
-  ContPath=$(docker inspect "$i" --format '{{ index .Config.Labels "com.docker.compose.project.working_dir" }}')
-  [ -z "$ContPath" ] && { "$i has no compose labels - skipping" ; continue ; }
-  ContConfigFile=$(docker inspect "$i" --format '{{ index .Config.Labels "com.docker.compose.project.config_files" }}')
-  ContName=$(docker inspect "$i" --format '{{ index .Config.Labels "com.docker.compose.service" }}')
-  ContEnv=$(docker inspect "$i" --format '{{index .Config.Labels "com.docker.compose.project.environment_file" }}')
-  ContImage=$(docker inspect "$i" --format='{{.Config.Image}}')
-  
-  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$ContImage"
-  echo
-  echo "Mounts:"
-  docker inspect  -f '{{ range .Mounts }}{{ .Source }}:{{ .Destination }}{{ printf "\n" }}{{ end }}' "$i"
-  echo
-done
--- a/extras/apprise-ex1.png
+++ b/extras/apprise-ex1.png
--- a/extras/apprise-ex2.png
+++ b/extras/apprise-ex2.png
--- a/extras/apprise_quickstart.md
+++ b/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!
+___
+___
--- a/extras/dc_brief.sh
+++ b/extras/dc_brief.sh
@@ -29,7 +29,7 @@ for i in $(docker ps --filter "name=$SearchName" --format '{{.Names}}') ; do
 done

 ### Sort arrays alphabetically
-IFS=$'\n' 
+IFS=$'\n'
 NoUpdates=($(sort <<<"${NoUpdates[*]}"))
 GotUpdates=($(sort <<<"${GotUpdates[*]}"))
 GotErrors=($(sort <<<"${GotErrors[*]}"))
@@ -44,7 +44,7 @@ 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 
+if [[ -n ${GotUpdates[*]} ]] ; then
   printf "\n\033[0;33mContainers with updates available:\033[0m\n"
   printf "%s\n" "${GotUpdates[@]}"
 fi
--- a/extras/errorCheck.sh
+++ b/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
--- a/extras/example.gif
+++ b/extras/example.gif
--- a/extras/example_old.gif
+++ b/extras/example_old.gif
--- a/notify_templates/notify_DSM.sh
+++ b/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}${NotifyUpdate}"
+    fi
+
+		trigger_notification
+}
--- a/notify_templates/notify_apprise.sh
+++ b/notify_templates/notify_apprise.sh
@@ -0,0 +1,55 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_APPRISE_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Modify to fit your setup - if API, set AppriseURL to your Apprise ip/domain.
+
+FromHost=$(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}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}
--- a/notify_templates/notify_discord.sh
+++ b/notify_templates/notify_discord.sh
@@ -0,0 +1,43 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_DISCORD_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Modify to fit your setup - set DiscordWebhookUrl
+
+FromHost=$(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}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}
--- a/notify_templates/notify_generic.sh
+++ b/notify_templates/notify_generic.sh
@@ -0,0 +1,44 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_GENERIC_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# generic sample, the "Hello World" of notification addons
+
+FromHost=$(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}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}
--- a/notify_templates/notify_gotify.sh
+++ b/notify_templates/notify_gotify.sh
@@ -0,0 +1,61 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_GOTIFY_VERSION="v0.2"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Modify to fit your setup - set GotifyUrl and GotifyToken.
+
+FromHost=$(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}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}
--- a/notify_templates/notify_matrix.sh
+++ b/notify_templates/notify_matrix.sh
@@ -0,0 +1,51 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_MATRIX_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Modify to fit your setup - set MatrixServer, Room_id and AccessToken
+
+FromHost=$(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}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}
--- a/notify_templates/notify_ntfy-sh.sh
+++ b/notify_templates/notify_ntfy-sh.sh
@@ -0,0 +1,50 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_NTFYSH_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Setup app and subscription at https://ntfy.sh
+# Use your unique Topic Name in the URL below.
+
+FromHost=$(hostname)
+
+trigger_notification() {
+    # Modify to fit your setup:
+    NtfyUrl="ntfy.sh/YourUniqueTopicName"
+
+    curl -sS -o /dev/null --show-error --fail \
+      -H "Title: $MessageTitle" \
+      -d "$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}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}
--- a/notify_templates/notify_pushbullet.sh
+++ b/notify_templates/notify_pushbullet.sh
@@ -0,0 +1,51 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_PUSHBULLET_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Requires jq installed and in PATH.
+# Modify to fit your setup - set Url and Token.
+
+FromHost=$(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}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}
--- a/notify_templates/notify_pushover.sh
+++ b/notify_templates/notify_pushover.sh
@@ -0,0 +1,57 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_PUSHOVER_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Requires jq installed and in PATH.
+# Modify to fit your setup - set Url and Token.
+
+FromHost=$(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}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}
--- a/notify_templates/notify_slack.sh
+++ b/notify_templates/notify_slack.sh
@@ -0,0 +1,52 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_SLACK_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh in the same directory as dockcheck.sh to enable the notification snippet.
+# Setu app and token at https://api.slack.com/tutorials/tracks/posting-messages-with-curl
+# Add your AccessToken and ChannelID below
+
+FromHost=$(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}${NotifyUpdate}"
+    fi
+
+    trigger_notification
+}
--- a/notify_templates/notify_smtp.sh
+++ b/notify_templates/notify_smtp.sh
@@ -0,0 +1,71 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_SMTP_VERSION="v0.1"
+# INFO: ssmtp is depcerated - consider to use msmtp instead.
+#
+# Copy/rename this file to notify.sh to enable the notification snipppet.
+# mSMTP/sSMTP has to be installed and configured manually.
+# Modify to fit your setup - changing SendMailFrom, SendMailTo, SubjectTag
+
+MSMTP=$(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}${NotifyUpdate}"
+    fi
+
+		trigger_notification
+}
--- a/notify_templates/notify_telegram.sh
+++ b/notify_templates/notify_telegram.sh
@@ -0,0 +1,58 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_TELEGRAM_VERSION="v0.1"
+#
+# Copy/rename this file to notify.sh to enable the notification snippet.
+# Required receiving services must already be set up.
+# Modify to fit your setup - set TelegramChatId and TelegramToken.
+
+FromHost=$(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
+}
--- a/notify_templates/urls.list
+++ b/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