hotfix suppress noise

Suppressed noise about not being able to source notification (new function) when on legacy notification template.

.gitignore

@@ -1,5 +1,7 @@
 # ignore users custom notify.sh
 /notify.sh
 /urls.list
+# ignore user config
+/dockcheck.config
 # ignore the auto-installed regctl
 regctl

README.md

@@ -10,25 +10,37 @@
   <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">CLI tool to automate docker image updates. <br>No <b>pre-pull</b>, selective, optional notifications and prune when done.</h3>
-<h2 align="center">Now with simple notification integrations!</h2>
-<h4 align="center">With features like excluding specific containers, custom container labels, auto-prune when done and more.</h4>
+<h2 align="center">CLI tool to automate docker image updates or notifying when updates are available.</h2>
+<h3 align="center">selective updates, exclude containers, custom labels, notification plugins, prune when done etc.</h3>
+
+<h4 align="center">:whale: Docker Hub pull limit :chart_with_downwards_trend: not an issue for checks but for actual pulls - <a href="#whale-docker-hub-pull-limit-chart_with_downwards_trend-not-an-issue-for-checks-but-for-actual-pulls">read more</a></h4>
+
+<h5 align="center">For Podman - see the fork <a href="https://github.com/sudo-kraken/podcheck">sudo-kraken/podcheck</a>!</h4>
 
 ___
 ## :bell: Changelog
 
-- **v0.5.0**: Rewritten notify logic - all templates are adjusted and should be migrated!
-    - Copy the custom settings from your current template to the new version of the same template.
-    - Look into, copy and customize the `urls.list` file if that's of interest.
-    - Other changes: 
-        - Added Discord notify template.
-        - Verbosity changed of `regctl`.
-- **v0.4.9**: Added a function to enrich the notify-message with release note URLs. See [Release notes addon](https://github.com/mag37/dockcheck#date-release-notes-addon-to-notifications)
-- **v0.4.8**: Rewrote prune logic to not prompt with options `-a|-y` or `-n`. Auto prune with `-p`.
-- **v0.4.7**: Notification Template changes to gotify(new!), DSM(improved), SMTP(deprecation alternative).
-- **v0.4.6**: Compatibility changes to timeout, due to busybox.
-- **v0.4.5**: Bugfixes, compatibility changes to timeout and arrays.
-- **v0.4.3**: Added timeout option to skip container if registry check takes too long (10s default).
+- **v0.6.5**: Refactored notification logic. See notify_templates/notify_v2.sh for upgrade steps.
+    - Added helper functions to simplify sourcing files and executing functions if they exist.
+    - Created notify_v2.sh wrapper script.
+      - Simplified and consolidated notification logic within notify_v2.sh.
+      - Added support for notification management via environment variables.
+      - Moved notification secrets to **dockcheck.config**.
+    - Added retries to wget/curl to not get empty responses when github is slow.
+- **v0.6.4**: Restructured the update process - first pulls all updates, then recreates all containers.
+    - Added logic to skip update check on non-compose containers (unless `-r` option).
+    - Added option `-F` to revert to `compose up -d <ContainerName>` targeting specific container and not the stack.
+        - Also added corresponding label and config-option.
+    - Added markdown formatting to `notify_ntfy-sh.sh` template.
+- **v0.6.3**: Some fixes and changes:
+    - Stops when a container recreation (compose up -d) fails, also `up`s the whole stack now.
+    - `-M`, Markdown format url-releasenotes in notification (requires template rework, look at gotify!)
+    - Added [addons/DSM/README.md](./addons/DSM/README.md) for more info Synology DSM info.
+    - Permission checks - graceful exit if no docker permissions + checking if root for pkg-manager.
+- **v0.6.2**: Style and colour changes, prometheus hotfix, new options:
+    - `-u`, Allow auto self update of dockcheck.sh
+    - `-I`, Print container release URLs in the CLI "choose update" list. (please contribute to `urls.list`)
+    - Extras: `-m`, Monochrome mode now hides the progress bar.
 ___
 
 
@@ -38,26 +50,31 @@ ___
 ```
 $ ./dockcheck.sh -h
 Syntax:     dockcheck.sh [OPTION] [part of name to filter]
-Example:    dockcheck.sh -y -d 10 -e nextcloud,heimdall
+Example:    dockcheck.sh -y -x 10 -d 10 -e nextcloud,heimdall
 
-Options:"
+Options:
 -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.
+-f     Force stop+start stack after update. Caution: restarts once for every updated container within stack.
+-F     Only compose up the specific container, not the whole compose stack (useful for master-compose structure).
 -h     Print this Help.
 -i     Inform - send a preconfigured notification.
+-I     Prints custom releasenote urls alongside each container with updates in CLI output (requires urls.list).
 -l     Only update if label is set. See readme.
--m     Monochrome mode, no printf color codes.
+-m     Monochrome mode, no printf colour codes and hides progress bar.
+-M     Prints custom releasenote urls as markdown (requires template support).
 -n     No updates, only checking availability.
 -p     Auto-Prune dangling images after update.
 -r     Allow updating images for docker run, wont update the container.
 -s     Include stopped containers in the check. (Logic: docker ps -a).
--t     Set a timeout (in seconds) per container for registry checkups, 10 is default.
+-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:
 ```
 $ ./dockcheck.sh
@@ -74,20 +91,24 @@ Containers with updates available:
 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.
 
 ___
 
 ## :nut_and_bolt: Dependencies
-- Running docker (duh) and compose, either standalone or plugin.  
+- 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
@@ -95,16 +116,35 @@ 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, it will be used. Otherwise, `notify_v2.sh` will be enabled.
+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)  
+V2 installation and configuration (tag v0.6.5 or later):
+Remove or rename `notify.sh` if previously configured using the legacy method.
+Uncomment and set the NOTIFY_CHANNELS environment variable in `dockcheck.config` to a space separated string of your desired notification channels to enable.
+Uncomment and set the environment variables related to the enabled notification channels.
+It is recommended not to make changes directly to the `notify_X.sh` template files and to use only environment variables defined in `dockcheck.config` using this method.
+
+Legacy installation and configuration:
+Use a previous version of a `notify_X.sh` template file (tag v0.6.4 or earlier) 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))
@@ -117,13 +157,19 @@ Use a `notify_X.sh` template file from the **notify_templates** directory, copy
 - [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 to Notifications
+### :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.   
+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:
@@ -134,15 +180,52 @@ nginx  ->  https://github.com/docker-library/official-images/blob/master/library
 ```
 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.only-specific-container: true
+      mag37.dockcheck.restart-stack: 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.
+- `mag37.dockcheck.only-specific-container: true` works instead of the `-F` option, specifying the updated container when doing compose up, like `docker compose up -d homer`.
+- `mag37.dockcheck.restart-stack: true` works instead of the `-f` option, forcing stop+restart on the whole compose-stack (Caution: Will restart on every updated container within stack).
 
 ## :roller_coaster: Workaround for non **amd64** / **arm64**
 `regctl` provides binaries for amd64/arm64, to use on other architecture you could try this workaround.
@@ -164,7 +247,15 @@ 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`).
 
-## :guardsman: Function to auth with docker hub before running
+## :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 {
@@ -173,17 +264,18 @@ function dchk {
 }
 ```
 
+## :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.  
+Using the `-r` option together with eg. `-i` and `-n` to just check for updates and send notifications and not update is safe though!
+
 ## :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.
-
 ## :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`.
@@ -194,8 +286,9 @@ dockcheck is created and released under the [GNU GPL v3.0](https://www.gnu.org/l
 ## :heartpulse: Sponsorlist
 
 - [avegy](https://github.com/avegy)
+- [eichhorn](https://github.com/eichhorn)
+- [stepdg](https://github.com/stepdg)
 
 ___
 
 ### :floppy_disk: The [story](https://mag37.org/posts/project_dockcheck/) behind it. 1 year in retrospect.
-

addons/DSM/README.md

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

addons/prometheus/README.md

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

addons/prometheus/grafana/grafana_dashboard.json

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

addons/prometheus/prometheus_collector.sh

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

default.config

@@ -0,0 +1,75 @@
+### Custom user variables
+## Copy this file to "dockcheck.config" to make it active
+## Can be placed in ~/.config/ or alongside dockcheck.sh
+##
+## Uncomment and set your preferred configuration variables here
+## This will not be replaced on updates
+
+#Timeout=10    # Set a timeout (in seconds) per container for registry checkups.
+#MaxAsync=10    # Set max asynchronous subprocesses, 1 default, 0 to disable.
+#BarWidth=50    # The character width of the progress bar
+#AutoMode=true    # Automatic updates, without interaction.
+#DontUpdate=true    # No updates; only checking availability without interaction.
+#AutoPrune=true    # Auto-Prune dangling images after update.
+#AutoSelfUpdate=true    # Allow automatic self updates - caution as this will pull new code and autorun it.
+#Notify=true    # Inform - send a preconfigured notification.
+#Exclude="one,two"    # Exclude containers, separated by comma.
+#DaysOld="5"    # Only update to new images that are N+ days old. Lists too recent with +prefix and age. 2xSlower.
+#Stopped="-a"    # Include stopped containers in the check. (Logic: docker ps -a).
+#OnlyLabel=true    # Only update if label is set. See readme.
+#ForceRestartStacks=true    # Force stop+start stack after update. Caution: restarts once for every updated container within stack.
+#DRunUp=true    # Allow updating images for docker run, wont update the container.
+#MonoMode=true    # Monochrome mode, no printf colour codes and hides progress bar.
+#PrintReleaseURL=true   # Prints custom releasenote urls alongside each container with updates (requires urls.list)`
+#PrintMarkdownURL=true    # Prints custom releasenote urls as markdown
+#OnlySpecific=true    # Only compose up the specific container, not the whole compose. (useful for master-compose structure).
+
+### Notify settings
+## All commented values are examples only. Modify as needed.
+##
+## Uncomment the line below and specify the notification channels you wish to enable in a space separated string
+# NOTIFY_CHANNELS="apprise discord DSM generic gotify matrix ntfy-sh pushbullet pushover slack smtp telegram"
+#
+## Uncomment to not send notifications when dockcheck itself has updates.
+# DISABLE_DOCKCHECK_NOTIFICATION=false
+## Uncomment to not send notifications when notify scripts themselves have updates.
+# DISABLE_NOTIFY_NOTIFICATION=false
+#
+## Apprise configuration variables. Set APPRISE_PAYLOAD to make a CLI call or set APPRISE_URL to make an API request instead.
+# APPRISE_PAYLOAD='mailto://myemail:mypass@gmail.com
+#                 mastodons://{token}@{host}
+#                 pbul://o.gn5kj6nfhv736I7jC3cj3QLRiyhgl98b
+#                 tgram://{bot_token}/{chat_id}/'
+# APPRISE_URL="http://apprise.mydomain.tld:1234/notify/apprise"
+#
+# DISCORD_WEBHOOK_URL="https://discord.com/api/webhooks/<token string>"
+#
+# DSM_SENDMAILTO="me@mydomain.com"
+# DSM_SUBJECTTAG="Email Subject Prefix"
+#
+# GOTIFY_DOMAIN="https://gotify.domain.tld"
+# GOTIFY_TOKEN="token-value"
+#
+# MATRIX_ACCESS_TOKEN="token-value"
+# MATRIX_ROOM_ID="myroom"
+# MATRIX_SERVER_URL="https://matrix.yourdomain.tld"
+#
+# NTFY_TOPIC_NAME="YourUniqueTopicName"
+#
+# PUSHBULLET_URL="https://api.pushbullet.com/v2/pushes"
+# PUSHBULLET_TOKEN="token-value"
+#
+# PUSHOVER_URL="https://api.pushover.net/1/messages.json"
+# PUSHOVER_USER_KEY="userkey"
+# PUSHOVER_TOKEN="token-value"
+#
+# SLACK_CHANNEL_ID=mychannel
+# SLACK_ACCESS_TOKEN=xoxb-token-value
+#
+# SMTP_MAIL_FROM="me@mydomain.tld"
+# SMTP_MAIL_TO="you@yourdomain.tld"
+# SMTP_SUBJECT_TAG="dockcheck"
+#
+# TELEGRAM_CHAT_ID="mychatid"
+# TELEGRAM_TOKEN="token-value"
+# TELEGRAM_TOPIC_ID="0"

dockcheck.sh

@@ -1,43 +1,94 @@
 #!/usr/bin/env bash
-VERSION="v0.5.0"
-### ChangeNotes: Rewritten notify logic - all templates adjusted, transfer your current settings to a new template! See README.
+VERSION="v0.6.5"
+# ChangeNotes: Refactored notification logic. See README.md for upgrade steps.
 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 "$0")"
 ScriptWorkDir="$(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 --retry 3 --retry-delay 1 --retry-max-time 10 -s -r 0-50 "$RawUrl" | sed -n "/VERSION/s/VERSION=//p" | tr -d '"')"
+LatestChanges="$(curl --retry 3 --retry-delay 1 --retry-max-time 10 -s -r 0-200 "$RawUrl" | sed -n "/ChangeNotes/s/# ChangeNotes: //p")"
 
-### Help Function:
+# Source helper functions
+source_if_exists() {
+  if [[ -s "$1" ]]; then source "$1"; fi
+}
+
+source_if_exists_or_fail() {
+  [[ -s "$1" ]] && source "$1"
+}
+
+# User customizable defaults
+source_if_exists_or_fail "${HOME}/.config/dockcheck.config" || source_if_exists "${ScriptWorkDir}/dockcheck.config"
+
+# Help Function
 Help() {
   echo "Syntax:     dockcheck.sh [OPTION] [part of name to filter]"
-  echo "Example:    dockcheck.sh -y -d 10 -e nextcloud,heimdall"
+  echo "Example:    dockcheck.sh -y -x 10 -d 10 -e nextcloud,heimdall"
   echo
   echo "Options:"
   echo "-a|y   Automatic updates, without interaction."
+  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 "-f     Force stop+start stack after update. Caution: restarts once for every updated container within stack."
+  echo "-F     Only compose up the specific container, not the whole compose stack (useful for master-compose structure)."
   echo "-h     Print this Help."
   echo "-i     Inform - send a preconfigured notification."
+  echo "-I     Prints custom releasenote urls alongside each container with updates in CLI output (requires urls.list)."
   echo "-l     Only update if label is set. See readme."
-  echo "-m     Monochrome mode, no printf color codes."
-  echo "-n     No updates, only checking availability."
-  echo "-p     Auto-Prune dangling images after update."
-  echo "-r     Allow updating images for docker run, wont update the container."
+  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"
 }
 
-### Colors:
+# Initialise variables
+Timeout=${Timeout:=10}
+MaxAsync=${MaxAsync:=1}
+BarWidth=${BarWidth:=50}
+AutoMode=${AutoMode:=false}
+DontUpdate=${DontUpdate:=false}
+AutoPrune=${AutoPrune:=false}
+AutoSelfUpdate=${AutoSelfUpdate:=false}
+OnlyLabel=${OnlyLabel:=false}
+Notify=${Notify:=false}
+ForceRestartStacks=${ForceRestartStacks:=false}
+DRunUp=${DRunUp:=false}
+MonoMode=${MonoMode:=false}
+PrintReleaseURL=${PrintReleaseURL:=false}
+PrintMarkdownURL=${PrintMarkdownURL:=false}
+Stopped=${Stopped:=""}
+CollectorTextFileDirectory=${CollectorTextFileDirectory:-}
+Exclude=${Exclude:-}
+DaysOld=${DaysOld:-}
+OnlySpecific=${OnlySpecific:=false}
+SpecificContainer=${SpecificContainer:=""}
+Excludes=()
+GotUpdates=()
+NoUpdates=()
+GotErrors=()
+SelectedUpdates=()
+regbin=""
+jqbin=""
+
+# Colours
 c_red="\033[0;31m"
 c_green="\033[0;32m"
 c_yellow="\033[0;33m"
@@ -45,90 +96,131 @@ c_blue="\033[0;34m"
 c_teal="\033[0;36m"
 c_reset="\033[0m"
 
-Timeout=10
-Stopped=""
-while getopts "aynpfrhlisvme:d:t:" options; do
+while getopts "ayfFhiIlmMnprsuvc:e:d:t:x:" options; do
   case "${options}" in
-    a|y) AutoUp="yes" ;;
-    n)   AutoUp="no" ;;
-    r)   DRunUp="yes" ;;
-    p)   AutoPrune="yes" ;;
-    l)   OnlyLabel=true ;;
-    f)   ForceRestartStacks=true ;;
-    i)   [ -s "$ScriptWorkDir"/notify.sh ] && { source "$ScriptWorkDir"/notify.sh ; Notify="yes" ; } ;;
+    a|y) AutoMode=true ;;
+    c)   CollectorTextFileDirectory="${OPTARG}" ;;
+    d)   DaysOld=${OPTARG} ;;
     e)   Exclude=${OPTARG} ;;
-    m)   declare c_{red,green,yellow,blue,teal,reset}="" ;;
+    f)   ForceRestartStacks=true ;;
+    F)   OnlySpecific=true ;;
+    i)   Notify=true ;;
+    I)   PrintReleaseURL=true ;;
+    l)   OnlyLabel=true ;;
+    m)   MonoMode=true ;;
+    M)   PrintMarkdownURL=true ;;
+    n)   DontUpdate=true; AutoMode=true;;
+    p)   AutoPrune=true ;;
+    r)   DRunUp=true ;;
     s)   Stopped="-a" ;;
     t)   Timeout="${OPTARG}" ;;
-    v)   printf "%s\n" "$VERSION" ; exit 0 ;;
-    d)   DaysOld=${OPTARG}
-         if ! [[ $DaysOld =~ ^[0-9]+$ ]] ; then { printf "Days -d argument given (%s) is not a number.\n" "${DaysOld}" ; exit 2 ; } ; fi ;;
-    h|*) Help ; exit 2 ;;
+    u)   AutoSelfUpdate=true ;;
+    v)   printf "%s\n" "$VERSION"; exit 0 ;;
+    x)   MaxAsync=${OPTARG} ;;
+    h|*) Help; exit 2 ;;
   esac
 done
 shift "$((OPTIND-1))"
 
+# Set $1 to a variable for name filtering later
+SearchName="${1:-}"
+
+# Basic notify configuration check
+if [[ "${Notify}" == true ]] && [[ ! -s "${ScriptWorkDir}/notify.sh" ]] && [[ -z "${NOTIFY_CHANNELS:-}" ]]; then
+  printf "Using v2 notifications with -i flag passed but no notify channels configured in dockcheck.config. This will result in no notifications being sent.\n"
+fi
+
+# Setting up options and sourcing functions
+if [[ "$DontUpdate" == true ]]; then AutoMode=true; fi
+if [[ "$MonoMode" == true ]]; then declare c_{red,green,yellow,blue,teal,reset}=""; fi
+if [[ "$Notify" == true ]]; then
+  source_if_exists_or_fail "${ScriptWorkDir}/notify.sh" || source_if_exists_or_fail "${ScriptWorkDir}/notify_templates/notify_v2.sh" || Notify=false
+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
+
+exec_if_exists() {
+  if [[ $(type -t $1) == function ]]; then "$@"; fi
+}
+
+exec_if_exists_or_fail() {
+  [[ $(type -t $1) == function ]] && "$@"
+}
+
 self_update_curl() {
   cp "$ScriptPath" "$ScriptPath".bak
-  if [[ $(builtin type -P curl) ]]; then
-    curl -L $RawUrl > "$ScriptPath" ; chmod +x "$ScriptPath"
-    printf "\n%s\n" "--- starting over with the updated version ---"
+  if command -v curl &>/dev/null; then
+    curl --retry 3 --retry-delay 1 --retry-max-time 10 -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
-  elif [[ $(builtin type -P wget) ]]; then
-    wget $RawUrl -O "$ScriptPath" ; chmod +x "$ScriptPath"
-    printf "\n%s\n" "--- starting over with the updated version ---"
+    exit 1 # Exit the old instance
+  elif command -v wget &>/dev/null; then
+    wget --waitretry=1 --timeout=15 -t 10 $RawUrl -O "$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" "${ScriptArgs[@]}" # run the new script with old arguments
-    exit 1 # exit the old instance
+    exit 0 # exit the old instance
   else
-    printf "curl/wget not available - download the update manually: %s \n" "$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 "Path error, skipping update.\n" ; return ; }
-  if [[ $(builtin type -P git) ]] && [[ "$(git ls-remote --get-url 2>/dev/null)" =~ .*"mag37/dockcheck".* ]] ; then
+  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 "Git error, manually pull/clone.\n" ; return ; }
+    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 "Path error.\n" ; return ; }
+    cd - || { printf "%bPath error.%b\n" "$c_red"; return; }
     exec "$ScriptPath" "${ScriptArgs[@]}" # run the new script with old arguments
-    exit 1 # exit the old instance
+    exit 0 # exit the old instance
   else
-    cd - || { printf "Path error.\n" ; return ; }
+    cd - || { printf "%bPath error.%b\n" "$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[$CC-1]}" )
         fi
       done
     fi
   done
-  printf "\nUpdating containers:\n"
-  printf "%s\n" "${SelectedUpdates[@]}"
-  printf "\n"
 }
 
 datecheck() {
-  ImageDate=$($regbin -v error image inspect "$RepoUrl" --format='{{.Created}}' | cut -d" " -f1 )
-  ImageAge=$(( ( $(date +%s) - $(date -d "$ImageDate" +%s) )/86400 ))
-  if [ "$ImageAge" -gt "$DaysOld" ] ; then
+  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
     return 1
@@ -138,70 +230,141 @@ datecheck() {
 progress_bar() {
   QueCurrent="$1"
   QueTotal="$2"
+  BarWidth=${BarWidth:-50}
   ((Percent=100*QueCurrent/QueTotal))
-  ((Complete=50*Percent/100)) # change first number for width (50)
-  ((Left=50-Complete)) # change first number for width (50)
+  ((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 " " "-")
-  [[ "$QueTotal" == "$QueCurrent" ]] || printf "\r[%s%s] %s/%s " "$BarComplete" "$BarLeft" "$QueCurrent" "$QueTotal"
-  [[ "$QueTotal" == "$QueCurrent" ]] && printf "\r[%b%s%b] %s/%s \n" "$c_teal" "$BarComplete" "$c_reset" "$QueCurrent" "$QueTotal"
+  if [[ "$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
+# Function to add user-provided urls to releasenotes
 releasenotes() {
-  for update in ${GotUpdates[@]}; do
+  unset Updates
+  for update in "${GotUpdates[@]}"; do
     found=false
     while read -r container url; do
-      [[ $update == $container ]] && Updates+=("$update  ->  $url") && found=true
-    done < "$ScriptWorkDir"/urls.list
-    [[ $found == false ]] && Updates+=("$update  ->  url missing") || continue
+      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
 }
 
-### Version check & initiate self update
-if [[ "$VERSION" != "$LatestRelease" ]] ; then
+# 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 --retry 3 --retry-delay 1 --retry-max-time 10 -L "$GetUrl" > "$ScriptWorkDir/$BinaryName";
+  elif command -v wget &>/dev/null; then wget --waitretry=1 --timeout=15 -t 10 "$GetUrl" -O "$ScriptWorkDir/$BinaryName";
+  else printf "\n%bcurl/wget not available - get %s manually from the repo link, exiting.%b" "$c_red" "$BinaryName" "$c_reset"; exit 1;
+  fi
+  [[ -f "$ScriptWorkDir/$BinaryName" ]] && chmod +x "$ScriptWorkDir/$BinaryName"
+}
+
+distro_checker() {
+  isRoot=false
+  [[ ${EUID:-} == 0 ]] && isRoot=true
+  if [[ -f /etc/alpine-release ]] ; then
+    [[ "$isRoot" == true ]] && PkgInstaller="apk add" || PkgInstaller="doas apk add"
+  elif [[ -f /etc/arch-release ]]; then
+    [[ "$isRoot" == true ]] && PkgInstaller="pacman -S" || PkgInstaller="sudo pacman -S"
+  elif [[ -f /etc/debian_version ]]; then
+    [[ "$isRoot" == true ]] && PkgInstaller="apt-get install" || PkgInstaller="sudo apt-get install"
+  elif [[ -f /etc/redhat-release ]]; then
+    [[ "$isRoot" == true ]] && PkgInstaller="dnf install" || PkgInstaller="sudo dnf install"
+  elif [[ -f /etc/SuSE-release ]]; then
+    [[ "$isRoot" == true ]] && PkgInstaller="zypper install" || PkgInstaller="sudo zypper install"
+  elif [[ $(uname -s) == "Darwin" ]]; then PkgInstaller="brew install"
+  else PkgInstaller="ERROR"; printf "\n%bNo distribution could be determined%b, falling back to static binary.\n" "$c_yellow" "$c_reset"
+  fi
+}
+
+# Dependency check + installer function
+dependency_check() {
+  AppName="$1"
+  AppVar="$2"
+  AppUrl="$3"
+  if command -v "$AppName" &>/dev/null; then export "$AppVar"="$AppName";
+  elif [[ -f "$ScriptWorkDir/$AppName" ]]; then export "$AppVar"="$ScriptWorkDir/$AppName";
+  else
+    printf "\nRequired dependency %b'%s'%b missing, do you want to install it?\n" "$c_teal" "$AppName" "$c_reset"
+    read -r -p "y: With packagemanager (sudo). / s: Download static binary. y/s/[n] " GetBin
+    GetBin=${GetBin:-no} # set default to no if nothing is given
+    if [[ "$GetBin" =~ [yYsS] ]]; then
+      [[ "$GetBin" =~ [yY] ]] && distro_checker
+      if [[ -n "${PkgInstaller:-}" && "${PkgInstaller:-}" != "ERROR" ]]; then
+        [[ $(uname -s) == "Darwin" && "$AppName" == "regctl" ]] && AppName="regclient"
+        if $PkgInstaller "$AppName"; then
+          AppName="$1"
+          export "$AppVar"="$AppName"
+          printf "\n%b%b installed.%b\n" "$c_green" "$AppName" "$c_reset"
+        else
+          PkgInstaller="ERROR"
+          printf "\n%bPackagemanager install failed%b, falling back to static binary.\n" "$c_yellow" "$c_reset"
+        fi
+      fi
+      if [[ "$GetBin" =~ [sS] ]] || [[ "$PkgInstaller" == "ERROR" ]]; then
+          binary_downloader "$AppName" "$AppUrl"
+          [[ -f "$ScriptWorkDir/$AppName" ]] && { export "$AppVar"="$ScriptWorkDir/$1" && printf "\n%b%s downloaded.%b\n" "$c_green" "$AppName" "$c_reset"; }
+      fi
+    else printf "\n%bDependency missing, exiting.%b\n" "$c_red" "$c_reset"; exit 1;
+    fi
+  fi
+  # Final check if binary is correct
+  [[ "$1" == "jq" ]] && VerFlag="--version"
+  [[ "$1" == "regctl" ]] && VerFlag="version"
+  ${!AppVar} "$VerFlag" &> /dev/null  || { printf "%s\n" "$AppName is not working - try to remove it and re-download it, exiting."; exit 1; }
+}
+
+# Numbered List function
+# if urls.list exists add release note url per line
+list_options() {
+  num=1
+  for update in "${Updates[@]}"; do
+    echo "$num) $update"
+    ((num++))
+  done
+}
+
+# Version check & initiate self update
+if [[ "$VERSION" != "$LatestRelease" ]]; then
   printf "New version available! %b%s%b ⇒ %b%s%b \n Change Notes: %s \n" "$c_yellow" "$VERSION" "$c_reset" "$c_green" "$LatestRelease" "$c_reset" "$LatestChanges"
-  if [[ -z "$AutoUp" ]] ; then
+  if [[ "$AutoMode" == false ]]; then
     read -r -p "Would you like to update? y/[n]: " SelfUpdate
     [[ "$SelfUpdate" =~ [yY] ]] && self_update
-  fi
-fi
-
-### 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 [[ $(builtin type -P "regctl") ]]; then regbin="regctl" ;
-elif [[ -f "$ScriptWorkDir/regctl" ]]; then regbin="$ScriptWorkDir/regctl" ;
-else
-  read -r -p "Required dependency 'regctl' missing, do you want it downloaded? y/[n] " GetDep
-  if [[ "$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 $RegUrl > "$ScriptWorkDir/regctl" ; chmod +x "$ScriptWorkDir/regctl" ; regbin="$ScriptWorkDir/regctl" ;
-    elif [[ $(builtin type -P wget) ]]; then wget $RegUrl -O "$ScriptWorkDir/regctl" ; chmod +x "$ScriptWorkDir/regctl" ; regbin="$ScriptWorkDir/regctl" ;
-    else
-      printf "%s\n" "curl/wget not available - get regctl manually from the repo link, quitting."
-    fi
+  elif [[ "$AutoMode" == true ]] && [[ "$AutoSelfUpdate" == true ]]; then self_update;
   else
-    printf "%s\n" "Dependency missing, quitting."
-    exit 1
+    [[ "$Notify" == true ]] && { exec_if_exists_or_fail dockcheck_notification "$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
+# Version check for notify templates
+[[ "$Notify" == true ]] && [[ ! -s "${ScriptWorkDir}/notify.sh" ]] && { exec_if_exists_or_fail notify_update_notification || printf "Could not source notify notification function.\n"; }
+
+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
@@ -209,30 +372,21 @@ 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
+# Listing typed exclusions
+if [[ -n ${Excludes[*]:-} ]]; then
   printf "\n%bExcluding these names:%b\n" "$c_blue" "$c_reset"
   printf "%s\n" "${Excludes[@]}"
   printf "\n"
 fi
 
 # Variables for progress_bar function
-DocCount=$(docker ps $Stopped --filter "name=$SearchName" --format '{{.Names}}' | wc -l)
+ContCount=$(docker ps $Stopped --filter "name=$SearchName" --format '{{.Names}}' | wc -l)
 RegCheckQue=0
 
-### Testing and setting timeout binary
-t_out=$(type -P "timeout")
+# Testing and setting timeout binary
+t_out=$(command -v timeout || echo "")
 if [[ $t_out ]]; then
-  t_out=$(realpath $t_out 2>/dev/null || readlink -f $t_out)
+  t_out=$(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}"
@@ -240,81 +394,140 @@ if [[ $t_out ]]; then
 else t_out=""
 fi
 
-### Check the image-hash of every running container VS the registry
-for i in $(docker ps $Stopped --filter "name=$SearchName" --format '{{.Names}}') ; do
-  ((RegCheckQue+=1))
-  progress_bar "$RegCheckQue" "$DocCount"
-  ### Looping every item over the list of excluded names and skipping:
-  for e in "${Excludes[@]}" ; do [[ "$i" == "$e" ]] && continue 2 ; done
+check_image() {
+  i="$1"
+  local Excludes=($Excludes_string)
+  for e in "${Excludes[@]}"; do
+    if [[ "$i" == "$e" ]]; then
+      printf "%s\n" "Skip $i"
+      return
+    fi
+  done
+
+  # Skipping non-compose containers unless option is set
+  ContLabels=$(docker inspect "$i" --format '{{json .Config.Labels}}')
+  ContPath=$($jqbin -r '."com.docker.compose.project.working_dir"' <<< "$ContLabels")
+  [[ "$ContPath" == "null" ]] && ContPath=""
+  if [[ -z "$ContPath" ]] && [[ "$DRunUp" == false ]]; then
+    printf "%s\n" "NoUpdates !$i - not checked, no compose file"
+    return
+  fi
+
+  local NoUpdates GotUpdates GotErrors
+  ImageId=$(docker inspect "$i" --format='{{.Image}}')
   RepoUrl=$(docker inspect "$i" --format='{{.Config.Image}}')
-  LocalHash=$(docker image inspect "$RepoUrl" --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
-      NoUpdates+=("$i")
+  LocalHash=$(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
-        NoUpdates+=("+$i ${ImageAge}d")
+      if [[ -n "${DaysOld:-}" ]] && ! datecheck; then
+        printf "%s\n" "NoUpdates +$i ${ImageAge}d"
       else
-        GotUpdates+=("$i")
+        printf "%s\n" "GotUpdates $i"
       fi
     fi
   else
-    # Here the RegHash is the result of an error code.
-    GotErrors+=("$i - ${RegHash}")
+    printf "%s\n" "GotErrors $i - ${RegHash}"  # Reghash contains an error code here
   fi
-done
+}
 
-### Sort arrays alphabetically
+# Make required functions and variables available to subprocesses
+export -f check_image datecheck
+export Excludes_string="${Excludes[*]:-}" # Can only export scalar variables
+export t_out regbin RepoUrl DaysOld DRunUp jqbin
+
+# Check for POSIX xargs with -P option, fallback without async
+if (echo "test" | xargs -P 2 >/dev/null 2>&1) && [[ "$MaxAsync" != 0 ]]; then
+  XargsAsync="-P $MaxAsync"
+else
+  XargsAsync=""
+  [[ "$MaxAsync" != 0 ]] && printf "%bMissing POSIX xargs, consider installing 'findutils' for asynchronous lookups.%b\n" "$c_yellow" "$c_reset"
+fi
+
+# Asynchronously check the image-hash of every running container VS the registry
+while read -r line; do
+  ((RegCheckQue+=1))
+  if [[ "$MonoMode" == false ]]; then progress_bar "$RegCheckQue" "$ContCount"; fi
+
+  Got=${line%% *}  # Extracts the first word (NoUpdates, GotUpdates, GotErrors)
+  item=${line#* }
+
+  case "$Got" in
+    NoUpdates) NoUpdates+=("$item") ;;
+    GotUpdates) GotUpdates+=("$item") ;;
+    GotErrors) GotErrors+=("$item") ;;
+    Skip) ;;
+    *) echo "Error! Unexpected output from subprocess: ${line}" ;;
+  esac
+done < <( \
+  docker ps $Stopped --filter "name=$SearchName" --format '{{.Names}}' | \
+  xargs $XargsAsync -I {} bash -c 'check_image "{}"' \
+)
+
+# Sort arrays alphabetically
 IFS=$'\n'
-NoUpdates=($(sort <<<"${NoUpdates[*]}"))
-GotUpdates=($(sort <<<"${GotUpdates[*]}"))
+NoUpdates=($(sort <<<"${NoUpdates[*]:-}"))
+GotUpdates=($(sort <<<"${GotUpdates[*]:-}"))
 unset IFS
 
-### Define how many updates are available
+# Run the prometheus exporter function
+if [[ -n "${CollectorTextFileDirectory:-}" ]]; then
+  exec_if_exists_or_fail prometheus_exporter ${#NoUpdates[@]} ${#GotUpdates[@]} ${#GotErrors[@]} || printf "%s\n" "Could not source prometheus exporter function."
+fi
+
+# Define how many updates are available
 UpdCount="${#GotUpdates[@]}"
 
-### List what containers got updates or not
-if [[ -n ${NoUpdates[*]} ]] ; then
+# 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 ${GotErrors[*]} ]] ; then
-  printf "\n%bContainers with errors, wont get updated:%b\n" "$c_red" "$c_reset"
+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 ${GotUpdates[*]} ]] ; then
-   printf "\n%bContainers with updates available:%b\n" "$c_yellow" "$c_reset"
-   [[ -z "$AutoUp" ]] && options || printf "%s\n" "${GotUpdates[@]}"
-   [[ -n "$Notify" ]] && { [[ $(type -t send_notification) == function ]] && send_notification "${GotUpdates[@]}" || printf "Could not source notification function.\n" ; }
+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[@]}"
+  [[ "$Notify" == true ]] && { exec_if_exists_or_fail send_notification "${GotUpdates[@]}" || printf "\nCould not source notification function.\n"; }
 fi
 
-### Optionally get updates if there's any
-if [ -n "$GotUpdates" ] ; then
-  if [ -z "$AutoUp" ] ; then
-  printf "\n%bChoose what containers to update.%b\n" "$c_teal" "$c_reset"
-  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=( "${GotUpdates[@]}" )
   fi
-  if [ "$AutoUp" == "${AutoUp#[Nn]}" ] ; then
+  if [[ "$DontUpdate" == false ]]; then
+    printf "\n%bUpdating container(s):%b\n" "$c_blue" "$c_reset"
+    printf "%s\n" "${SelectedUpdates[@]}"
+
     NumberofUpdates="${#SelectedUpdates[@]}"
+
     CurrentQue=0
-    for i in "${SelectedUpdates[@]}"
-    do
+    for i in "${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" }}')
+      printf "\n%bNow updating (%s/%s): %b%s%b\n" "$c_teal" "$CurrentQue" "$NumberofUpdates" "$c_blue" "$i" "$c_reset"
+      ContLabels=$(docker inspect "$i" --format '{{json .Config.Labels}}')
       ContImage=$(docker inspect "$i" --format='{{.Config.Image}}')
-      ContUpdateLabel=$(docker inspect "$i" --format '{{ index .Config.Labels "mag37.dockcheck.update" }}')
-      ContRestartStack=$(docker inspect "$i" --format '{{ index .Config.Labels "mag37.dockcheck.restart-stack" }}')
-      ### Checking if compose-values are empty - hence started with docker run:
-      if [ -z "$ContPath" ] ; then
-        if [ "$DRunUp" == "yes" ] ; then
+      ContPath=$($jqbin -r '."com.docker.compose.project.working_dir"' <<< "$ContLabels")
+      [[ "$ContPath" == "null" ]] && ContPath=""
+      ContUpdateLabel=$($jqbin -r '."mag37.dockcheck.update"' <<< "$ContLabels")
+      [[ "$ContUpdateLabel" == "null" ]] && ContUpdateLabel=""
+      # Checking if Label Only -option is set, and if container got the label
+      [[ "$OnlyLabel" == true ]] && { [[ "$ContUpdateLabel" != true ]] && { echo "No update label, skipping."; continue; } }
+
+      # Checking if compose-values are empty - hence started with docker run
+      if [[ -z "$ContPath" ]]; then
+        if [[ "$DRunUp" == true ]]; then
           docker pull "$ContImage"
           printf "%s\n" "$i got a new image downloaded, rebuild manually with preferred 'docker run'-parameters"
         else
@@ -322,30 +535,61 @@ if [ -n "$GotUpdates" ] ; then
         fi
         continue
       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 $i" ; continue ; }
+
+      docker pull "$ContImage" || { printf "\n%bDocker error, exiting!%b\n" "$c_red" "$c_reset" ; exit 1; }
+    done
+    printf "\n%bDone pulling updates. %bRecreating updated containers.%b\n" "$c_green" "$c_blue" "$c_reset"
+
+    CurrentQue=0
+    for i in "${SelectedUpdates[@]}"; do
+      ((CurrentQue+=1))
+      unset CompleteConfs
+      # Extract labels and metadata
+      ContLabels=$(docker inspect "$i" --format '{{json .Config.Labels}}')
+      ContImage=$(docker inspect "$i" --format='{{.Config.Image}}')
+      ContPath=$($jqbin -r '."com.docker.compose.project.working_dir"' <<< "$ContLabels")
+      [[ "$ContPath" == "null" ]] && ContPath=""
+      ContConfigFile=$($jqbin -r '."com.docker.compose.project.config_files"' <<< "$ContLabels")
+      [[ "$ContConfigFile" == "null" ]] && ContConfigFile=""
+      ContName=$($jqbin -r '."com.docker.compose.service"' <<< "$ContLabels")
+      [[ "$ContName" == "null" ]] && ContName=""
+      ContEnv=$($jqbin -r '."com.docker.compose.project.environment_file"' <<< "$ContLabels")
+      [[ "$ContEnv" == "null" ]] && ContEnv=""
+      ContUpdateLabel=$($jqbin -r '."mag37.dockcheck.update"' <<< "$ContLabels")
+      [[ "$ContUpdateLabel" == "null" ]] && ContUpdateLabel=""
+      ContRestartStack=$($jqbin -r '."mag37.dockcheck.restart-stack"' <<< "$ContLabels")
+      [[ "$ContRestartStack" == "null" ]] && ContRestartStack=""
+      ContOnlySpecific=$($jqbin -r '."mag37.dockcheck.only-specific-container"' <<< "$ContLabels")
+      [[ "$ContOnlySpecific" == "null" ]] && ContRestartStack=""
+
+      # Checking if compose-values are empty - hence started with docker run
+      [[ -z "$ContPath" ]] && continue
+
+      # cd to the compose-file directory to account for people who use relative volumes
+      cd "$ContPath" || { printf "\n%bPath error - skipping%b %s" "$c_red" "$c_reset" "$i"; continue; }
       ## Reformatting path + multi compose
-      if [[ $ContConfigFile = '/'* ]] ; then
-        CompleteConfs=$(for conf in ${ContConfigFile//,/ } ; do printf -- "-f %s " "$conf"; done)
+      if [[ $ContConfigFile = '/'* ]]; then
+        CompleteConfs=$(for conf in ${ContConfigFile//,/ }; do printf -- "-f %s " "$conf"; done)
       else
-        CompleteConfs=$(for conf in ${ContConfigFile//,/ } ; do printf -- "-f %s/%s " "$ContPath" "$conf"; done)
+        CompleteConfs=$(for conf in ${ContConfigFile//,/ }; do printf -- "-f %s/%s " "$ContPath" "$conf"; done)
       fi
-      printf "\n%bNow updating (%s/%s): %b%s%b\n" "$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"
-      ### Check if the container got an environment file set and reformat it
-      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} ${ContEnvs} up -d
+      # Check if the container got an environment file set and reformat it
+      ContEnvs=""
+      if [[ -n "$ContEnv" ]]; then ContEnvs=$(for env in ${ContEnv//,/ }; do printf -- "--env-file %s " "$env"; done); fi
+      # Set variable when compose up should only target the specific container, not the stack
+      if [[ $OnlySpecific == true ]] || [[ $ContOnlySpecific == true ]]; then SpecificContainer="$ContName"; fi
+
+      printf "\n%bNow recreating (%s/%s): %b%s%b\n" "$c_teal" "$CurrentQue" "$NumberofUpdates" "$c_blue" "$i" "$c_reset"
+      # Check if the whole stack should be restarted
+      if [[ "$ContRestartStack" == true ]] || [[ "$ForceRestartStacks" == true ]]; then
+        ${DockerBin} ${CompleteConfs} stop; ${DockerBin} ${CompleteConfs} ${ContEnvs} up -d || { printf "\n%bDocker error, exiting!%b\n" "$c_red" "$c_reset" ; exit 1; }
       else
-        $DockerBin ${CompleteConfs} ${ContEnvs} up -d ${ContName}
+        ${DockerBin} ${CompleteConfs} ${ContEnvs} up -d ${SpecificContainer} || { printf "\n%bDocker error, exiting!%b\n" "$c_red" "$c_reset" ; exit 1; }
       fi
     done
+    if [[ "$AutoPrune" == false ]] && [[ "$AutoMode" == false ]]; then printf "\n"; read -rep "Would you like to prune dangling images? y/[n]: " AutoPrune; fi
+    if [[ "$AutoPrune" == true ]] || [[ "$AutoPrune" =~ [yY] ]]; then printf "\n Auto pruning.."; docker image prune -f; fi
     printf "\n%bAll done!%b\n" "$c_green" "$c_reset"
-    if [[ -z "$AutoPrune" ]] && [[ -z "$AutoUp" ]]; then read -r -p "Would you like to prune dangling images? y/[n]: " AutoPrune ; fi
-    [[ "$AutoPrune" =~ [yY] ]] && docker image prune -f
   else
     printf "\nNo updates installed, exiting.\n"
   fi

extras/errorCheck.sh

@@ -2,12 +2,21 @@
 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 "$i" --format '{{index .Config.Labels "com.docker.compose.project.environment_file" }}')
+  ContLabels=$(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"
@@ -20,6 +29,8 @@ for i in $(docker ps --filter "name=$SearchName" --format '{{.Names}}') ; do
   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"

notify_templates/notify_DSM.sh

@@ -1,10 +1,10 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-# INFO: ssmtp is depcerated - consider to use msmtp instead.
+NOTIFY_DSM_VERSION="v0.2"
+# 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.
+# Do not modify this file directly. Set DSM_SENDMAILTO and DSM_SUBJECTTAG in your dockcheck.config file.
 
 MSMTP=$(which msmtp)
 SSMTP=$(which ssmtp)
@@ -17,36 +17,32 @@ else
 	echo "No msmtp or ssmtp binary found in PATH: $PATH" ; exit 1
 fi
 
-send_notification() {
-[ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-FromHost=$(hostname)
+trigger_DSM_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"
+# You can also manually override by assigning something else to DSM_SENDMAILTO in dockcheck.config.
+SendMailTo=${DSM_SENDMAILTO:-$(grep 'eventmail1' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')}
+# e.g. DSM_SENDMAILTO="me@mydomain.com"
 
-SubjectTag=$(grep 'eventsubjectprefix' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')
+SubjectTag=${DSM_SUBJECTTAG:-$(grep 'eventsubjectprefix' $CfgFile | sed -n 's/.*"\([^"]*\)".*/\1/p')}
+# e.g. DSM_SUBJECTTAG="Email Subject Prefix"
 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')}
 
-printf "\nSending email notification.\n"
-
-printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n\n$UpdToString"
-
 $MailPkg $SendMailTo << __EOF
 From: "$SenderName" <$SenderMail>
 date:$(date -R)
 To: <$SendMailTo>
-Subject: $SubjectTag Updates available on $FromHost
+Subject: $SubjectTag $MessageTitle
 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
 }

notify_templates/notify_apprise.sh

@@ -1,30 +1,30 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_APPRISE_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 - if API, set AppriseURL to your Apprise ip/domain.
+# Do not modify this file directly. Set APPRISE_PAYLOAD in your dockcheck.config file.
+# If API, set APPRISE_URL instead.
 
-send_notification() {
-[ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-FromHost=$(hostname)
+if [[ -z "${APPRISE_PAYLOAD:-}" ]] && [[ -z "${APPRISE_URL:-}" ]]; then
+  printf "Apprise notification channel enabled, but required configuration variables are missing. Apprise notifications will not be sent.\n"
 
-printf "\nSending Apprise notification\n"
+  remove_channel apprise
+fi
 
-MessageTitle="$FromHost - updates available."
-# Setting the MessageBody variable here.
-printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
+trigger_apprise_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 [[ -n "${APPRISE_PAYLOAD:-}" ]]; then
+    apprise -vv -t "$MessageTitle" -b "$MessageBody" \
+      ${APPRISE_PAYLOAD}
+  fi
 
-### 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
+  # e.g. APPRISE_PAYLOAD='mailto://myemail:mypass@gmail.com
+  #                      mastodons://{token}@{host}
+  #                      pbul://o.gn5kj6nfhv736I7jC3cj3QLRiyhgl98b
+  #                      tgram://{bot_token}/{chat_id}/'
 
+  if [[ -n "${APPRISE_URL:-}" ]]; then
+    AppriseURL="${APPRISE_URL}"
+    curl -X POST -F "title=$MessageTitle" -F "body=$MessageBody" -F "tags=all" $AppriseURL # e.g. APPRISE_URL=http://apprise.mydomain.tld:1234/notify/apprise
+  fi
 }

notify_templates/notify_discord.sh

@@ -1,25 +1,18 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_DISCORD_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 DiscordWebhookUrl
+# Do not modify this file directly. Set DISCORD_WEBHOOK_URL in your dockcheck.config file.
 
-send_notification() {
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+if [[ -z "${DISCORD_WEBHOOK_URL:-}" ]]; then
+  printf "Discord notification channel enabled, but required configuration variables are missing. Discord notifications will not be sent.\n"
 
-    echo "$UpdToString"
-    FromHost=$(hostname)
+  remove_channel discord
+fi
 
-    # platform specific notification code would go here
-    printf "\nSending Discord notification\n"
-
-    # Setting the MessageBody variable here.
-    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
-
-    # 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"
+trigger_discord_notification() {
+  DiscordWebhookUrl="${DISCORD_WEBHOOK_URL}" # e.g. DISCORD_WEBHOOK_URL=https://discord.com/api/webhooks/<token string>
 
+  MsgBody="{\"username\":\"$FromHost\",\"content\":\"$MessageBody\"}"
+  curl -sS -o /dev/null --fail -X POST -H "Content-Type: application/json" -d "$MsgBody" "$DiscordWebhookUrl"
+}

notify_templates/notify_generic.sh

@@ -1,16 +1,9 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_GENERIC_VERSION="v0.2"
 #
-# Copy/rename this file to notify.sh to enable the notification snippet.
 # generic sample, the "Hello World" of notification addons
 
-send_notification() {
-  [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-  UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-
-  FromHost=$(hostname)
-
-  # platform specific notification code would go here
-  printf "\n%bGeneric notification addon:%b" "$c_green" "$c_reset"
-  printf "\nThe following docker containers on %s need to be updated:\n" "$FromHost"
-  printf "$UpdToString"
+trigger_generic_notification()  {
+    printf "\n$MessageTitle\n"
+    printf "\n$MessageBody\n"
 }

notify_templates/notify_gotify.sh

@@ -1,29 +1,30 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_GOTIFY_VERSION="v0.3"
 #
-# 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.
+# Do not modify this file directly. Set GOTIFY_TOKEN and GOTIFY_DOMAIN in your dockcheck.config file.
 
-send_notification() {
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-    FromHost=$(hostname)
+if [[ -z "${GOTIFY_TOKEN:-}" ]] || [[ -z "${GOTIFY_DOMAIN:-}" ]]; then
+  printf "Gotify notification channel enabled, but required configuration variables are missing. Gotify notifications will not be sent.\n"
 
-    # platform specific notification code would go here
-    printf "\nSending Gotify notification\n"
+  remove_channel gotify
+fi
 
-    # Setting the MessageTitle and MessageBody variable here.
-    MessageTitle="${FromHost} - updates available."
-    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
+trigger_gotify_notification() {
+  GotifyToken="${GOTIFY_TOKEN}" # e.g. GOTIFY_TOKEN=token-value
+  GotifyUrl="${GOTIFY_DOMAIN}/message?token=${GotifyToken}" # e.g. GOTIFY_URL=https://gotify.domain.tld
 
-    # 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
 
-    curl \
-        -F "title=${MessageTitle}" \
-        -F "message=${MessageBody}" \
-        -F "priority=5" \
-        -X POST "${GotifyUrl}" &> /dev/null
+  JsonData=$( 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
 }

notify_templates/notify_matrix.sh

@@ -1,28 +1,21 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_MATRIX_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 MatrixServer, Room_id and AccessToken
+# Do not modify this file directly. Set MATRIX_ACCESS_TOKEN, MATRIX_ROOM_ID, and MATRIX_SERVER_URL in your dockcheck.config file.
 
-send_notification() {
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-    FromHost=$(hostname)
+if [[ -z "${MATRIX_ACCESS_TOKEN:-}" ]] || [[ -z "${MATRIX_ROOM_ID}:-" ]] || [[ -z "${MATRIX_SERVER_URL}:-" ]]; then
+  printf "Matrix notification channel enabled, but required configuration variables are missing. Matrix notifications will not be sent.\n"
 
-    # platform specific notification code would go here
-    printf "\nSending Matrix notification\n"
+  remove_channel matrix
+fi
 
-    # Setting the MessageBody variable here.
-    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
-
-    # 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 "$MsgBody"
+trigger_matrix_notification() {
+  AccessToken="${MATRIX_ACCESS_TOKEN}" # e.g. MATRIX_ACCESS_TOKEN=token-value
+  Room_id="${MATRIX_ROOM_ID}" # e.g. MATRIX_ROOM_ID=myroom
+  MatrixServer="${MATRIX_SERVER_URL}" # e.g. MATRIX_SERVER_URL=http://matrix.yourdomain.tld
+  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"
 }

notify_templates/notify_ntfy-sh.sh

@@ -1,26 +1,27 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_NTFYSH_VERSION="v0.3"
 #
-# 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.
+# Do not modify this file directly. Set NTFY_TOPIC_NAME in your dockcheck.config file.
 
-send_notification() {
-[ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-FromHost=$(hostname)
+if [[ -z "${NTFY_TOPIC_NAME:-}" ]]; then
+  printf "Ntfy.sh notification channel enabled, but required configuration variables are missing. Ntfy.sh notifications will not be sent.\n"
 
-printf "\nSending ntfy.sh notification\n"
+  remove_channel ntfy-sh
+fi
 
-MessageTitle="$FromHost - updates available."
-# Setting the MessageBody variable here.
-printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
+trigger_ntfy-sh_notification() {
+  NtfyUrl="ntfy.sh/${NTFY_TOPIC_NAME}" # e.g. NTFY_TOPIC_NAME=YourUniqueTopicName
 
-# Modify to fit your setup:
-NtfyUrl="ntfy.sh/YourUniqueTopicName"
-
-curl -sS -o /dev/null --show-error --fail \
-  -H "Title: $MessageTitle" \
-  -d "$MessageBody" \
-  $NtfyUrl
+  if [[ "$PrintMarkdownURL" == true ]]; then
+      ContentType="Markdown: yes"
+  else
+      ContentType="Markdown: no" #text/plain
+  fi
 
+  curl -sS -o /dev/null --show-error --fail \
+    -H "Title: $MessageTitle" \
+    -H "$ContentType"      \
+    -d "$MessageBody" \
+    "$NtfyUrl"
 }

notify_templates/notify_pushbullet.sh

@@ -1,27 +1,20 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_PUSHBULLET_VERSION="v0.2"
 #
-# 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.
+# Do not modify this file directly. Set PUSHBULLET_TOKEN and PUSHBULLET_URL in your dockcheck.config file.
 
-send_notification() {
-[ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-FromHost=$(hostname)
+if [[ -z "${PUSHBULLET_URL:-}" ]] || [[ -z "${PUSHBULLET_TOKEN:-}" ]]; then
+  printf "Pushbullet notification channel enabled, but required configuration variables are missing. Pushbullet notifications will not be sent.\n"
 
-# platform specific notification code would go here
-printf "\nSending pushbullet notification\n"
+  remove_channel pushbullet
+fi
 
-MessageTitle="$FromHost - updates available."
-# Setting the MessageBody variable here.
-printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
-
-# 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" $PushUrl -d @-
+trigger_pushbullet_notification() {
+  PushUrl="${PUSHBULLET_URL}" # e.g. PUSHBULLET_URL=https://api.pushbullet.com/v2/pushes
+  PushToken="${PUSHBULLET_TOKEN}" # e.g. PUSHBULLET_TOKEN=token-value
 
+  # 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 @-
 }

notify_templates/notify_pushover.sh

@@ -1,32 +1,26 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_PUSHOVER_VERSION="v0.2"
 #
-# 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.
+# Do not modify this file directly. Set PUSHOVER_USER_KEY, PUSHOVER_TOKEN, and PUSHOVER_URL in your dockcheck.config file.
 
-send_notification() {
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-    FromHost=$(hostname)
+if [[ -z "${PUSHOVER_URL:-}" ]] || [[ -z "${PUSHOVER_USER_KEY:-}" ]] || [[ -z "${PUSHOVER_TOKEN:-}" ]]; then
+  printf "Pushover notification channel enabled, but required configuration variables are missing. Pushover notifications will not be sent.\n"
 
-    # platform specific notification code would go here
-    printf "\nSending pushover notification\n"
+  remove_channel pushover
+fi
 
-    MessageTitle="$FromHost - updates available."
-    # Setting the MessageBody variable here.
-    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
+trigger_pushover_notification() {
+  PushoverUrl="${PUSHOVER_URL}" # e.g. PUSHOVER_URL=https://api.pushover.net/1/messages.json
+  PushoverUserKey="${PUSHOVER_USER_KEY}" # e.g. PUSHOVER_USER_KEY=userkey
+  PushoverToken="${PUSHOVER_TOKEN}" # e.g. PUSHOVER_TOKEN=token-value
 
-    # 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" \
-        $PushoverUrl
+  # Sending the notification via Pushover
+  curl -sS -o /dev/null --show-error --fail -X POST \
+      -F "token=$PushoverToken" \
+      -F "user=$PushoverUserKey" \
+      -F "title=$MessageTitle" \
+      -F "message=$MessageBody" \
+      $PushoverUrl
 }

notify_templates/notify_slack.sh

@@ -0,0 +1,22 @@
+### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_SLACK_VERSION="v0.2"
+#
+# Setup app and token at https://api.slack.com/tutorials/tracks/posting-messages-with-curl
+# Do not modify this file directly. Set SLACK_ACCESS_TOKEN, and SLACK_CHANNEL_ID in your dockcheck.config file.
+
+if [[ -z "${SLACK_ACCESS_TOKEN:-}" ]] || [[ -z "${SLACK_CHANNEL_ID:-}" ]]; then
+  printf "Slack notification channel enabled, but required configuration variables are missing. Slack notifications will not be sent.\n"
+
+  remove_channel slack
+fi
+
+trigger_slack_notification() {
+  AccessToken="${SLACK_ACCESS_TOKEN}" # e.g. SLACK_ACCESS_TOKEN=some-token
+  ChannelID="${SLACK_CHANNEL_ID}" # e.g. CHANNEL_ID=mychannel
+  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
+}

notify_templates/notify_smtp.sh

@@ -1,9 +1,15 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_SMTP_VERSION="v0.2"
 # 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
+# Do not modify this file directly. Set SMTP_MAIL_FROM, SMTP_MAIL_TO, and SMTP_SUBJECT_TAG in your dockcheck.config file.
+
+if [[ -z "${SMTP_MAIL_FROM:-}" ]] || [[ -z "${SMTP_MAIL_TO:-}" ]] || [[ -z "${SMTP_SUBJECT_TAG:-}" ]]; then
+  printf "SMTP notification channel enabled, but required configuration variables are missing. SMTP notifications will not be sent.\n"
+
+  remove_channel smtp
+fi
 
 MSMTP=$(which msmtp)
 SSMTP=$(which ssmtp)
@@ -16,25 +22,16 @@ else
 	echo "No msmtp or ssmtp binary found in PATH: $PATH" ; exit 1
 fi
 
-send_notification() {
-[ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-FromHost=$(hostname)
-
-# User variables:
-SendMailFrom="me@mydomain.tld"
-SendMailTo="me@mydomain.tld"
-SubjectTag="dockcheck"
-
-printf "\nSending email notification.\n"
-
-printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n\n$UpdToString"
+trigger_smtp_notification() {
+SendMailFrom="${SMTP_MAIL_FROM}" # e.g. MAIL_FROM=me@mydomain.tld
+SendMailTo="${SMTP_MAIL_TO}" # e.g. MAIL_TO=me@mydomain.tld
+SubjectTag="${SMTP_SUBJECT_TAG}" # e.g. SUBJECT_TAG=dockcheck
 
 $MailPkg $SendMailTo << __EOF
 From: "$FromHost" <$SendMailFrom>
 date:$(date -R)
 To: <$SendMailTo>
-Subject: [$SubjectTag] Updates available on $FromHost
+Subject: [$SubjectTag] $MessageTitle $FromHost
 Content-Type: text/plain; charset=UTF-8; format=flowed
 Content-Transfer-Encoding: 7bit
 

notify_templates/notify_telegram.sh

@@ -1,27 +1,27 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_TELEGRAM_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 TelegramChatId and TelegramToken.
+# Do not modify this file directly. Set TELEGRAM_CHAT_ID and TELEGRAM_TOKEN in your dockcheck.config file.
 
-send_notification() {
-    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
-    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-    FromHost=$(hostname)
+if [[ -z "${TELEGRAM_CHAT_ID:-}" ]] || [[ -z "${TELEGRAM_TOKEN:-}" ]]; then
+  printf "Telegram notification channel enabled, but required configuration variables are missing. Telegram notifications will not be sent.\n"
 
-    # platform specific notification code would go here
-    printf "\nSending Telegram notification\n"
+  remove_channel telegram
+fi
 
-    # Setting the MessageBody variable here.
-    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
+trigger_telegram_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"
+  TelegramToken="${TELEGRAM_TOKEN}" # e.g. TELEGRAM_TOKEN=token-value
+  TelegramChatId="${TELEGRAM_CHAT_ID}" # e.g. TELEGRAM_CHAT_ID=mychatid
+  TelegramUrl="https://api.telegram.org/bot$TelegramToken"
+  TelegramTopicID=${TELEGRAM_TOPIC_ID:="0"}
+  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"
 }

notify_templates/notify_v2.sh

@@ -0,0 +1,84 @@
+NOTIFY_V2_VERSION="v0.1"
+#
+# If migrating from an older notify template, remove your existing notify.sh file.
+# Enable and configure all required notification variables in your dockcheck.config file, e.g.:
+# NOTIFY_CHANNELS=apprise gotify slack
+# SLACK_TOKEN=xoxb-some-token-value
+# GOTIFY_TOKEN=some.token
+
+enabled_notify_channels=( ${NOTIFY_CHANNELS:-} )
+
+FromHost=$(hostname)
+
+remove_channel() {
+  local temp_array=()
+  for channel in "${enabled_notify_channels[@]}"; do
+    [[ "${channel}" != "$1" ]] && temp_array+=("${channel}")
+  done
+  enabled_notify_channels=( "${temp_array[@]}" )
+}
+
+for channel in "${enabled_notify_channels[@]}"; do
+  source_if_exists "${ScriptWorkDir}/notify_templates/notify_${channel}.sh"
+done
+
+send_notification() {
+  [[ -s "$ScriptWorkDir"/urls.list ]] && releasenotes || Updates=("$@")
+  UpdToString=$( printf '%s\\n' "${Updates[@]}" )
+
+  for channel in "${enabled_notify_channels[@]}"; do
+    printf "\nSending ${channel} notification\n"
+
+    MessageTitle="$FromHost - updates available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString\n"
+
+    exec_if_exists trigger_${channel}_notification "$@"
+  done
+}
+
+### Set DISABLE_DOCKCHECK_NOTIFICATION=false in dockcheck.config
+### to not send notifications when dockcheck itself has updates.
+dockcheck_notification() {
+  if [[ ! "${DISABLE_DOCKCHECK_NOTIFICATION:-}" = "true" ]]; then
+    MessageTitle="$FromHost - New version of dockcheck available."
+    # Setting the MessageBody variable here.
+    printf -v MessageBody "Installed version: $1\nLatest version: $2\n\nChangenotes: $3\n"
+
+    if [[ ${#enabled_notify_channels[@]} -gt 0 ]]; then printf "\n"; fi
+    for channel in "${enabled_notify_channels[@]}"; do
+      printf "Sending dockcheck update notification - ${channel}\n"
+      exec_if_exists trigger_${channel}_notification
+    done
+  fi
+}
+
+### Set DISABLE_NOTIFY_UPDATE_NOTIFICATION=false in dockcheck.config
+### to not send notifications when notify scripts themselves have updates.
+notify_update_notification() {
+  if [[ ! "${DISABLE_NOTIFY_UPDATE_NOTIFICATION:-}" = "true" ]]; then
+    update_channels=( "${enabled_notify_channels[@]}" "v2" )
+
+    for notify_script in "${update_channels[@]}"; do
+      upper_channel=$(tr '[:lower:]' '[:upper:]' <<< "$notify_script")
+      VersionVar="NOTIFY_${upper_channel}_VERSION"
+      if [[ -n "${!VersionVar}" ]]; then
+        RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_${notify_script}.sh"
+        LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_${upper_channel}_VERSION/s/NOTIFY_${upper_channel}_VERSION=//p" | tr -d '"')"
+        LatestNotifyRelease=${LatestNotifyRelease:-undefined}
+        if [[ ! "${LatestNotifyRelease}" = "undefined" ]]; then
+          if [[ "${!VersionVar}" != "$LatestNotifyRelease" ]] ; then
+            MessageTitle="$FromHost - New version of notify_${notify_script}.sh available."
+
+            printf -v MessageBody "notify_${notify_script}.sh update available:\n ${!VersionVar} -> $LatestNotifyRelease\n"
+
+            for channel in "${enabled_notify_channels[@]}"; do
+              printf "Sending notify_${notify_script}.sh update notification - ${channel}\n"
+              exec_if_exists trigger_${channel}_notification
+            done
+          fi
+        fi
+      fi
+    done
+  fi
+}

notify_templates/urls.list

@@ -6,10 +6,17 @@ 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
@@ -28,7 +35,15 @@ 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