Clean&refactor (#148 )

* cleaning spaces and consistent formatting * removed more subshells * progress bar cleanup * moved uservars to a .config file * rewritten options from yes/no to true/false * initialized default variables * added bash options: -euo pipefail, shopt -s nullglob and failglob * quoting variables, cleaning syntax, logic and order * unquoted some variables due to breakage * added exit on pull-fail * added new sponsor * added Slack template
Merge pull request #139 from devzwf/main
2026-04-18 02:17:46 +00:00 · 2025-03-30 13:31:34 +02:00 · 2025-03-18 05:38:59 +01:00 · 2025-03-17 22:20:06 -04:00 · 2025-03-17 08:39:09 +01:00 · 2025-03-16 20:56:11 +01:00
22 changed files with 1294 additions and 324 deletions
--- a/.gitignore
+++ b/.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
--- a/README.md
+++ b/README.md
@@ -10,24 +10,29 @@
  <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">CLI tool to automate docker image updates or notifying when updates are available.</h2>
-<h2 align="center">Now with simple notification integrations!</h2>
+<h3 align="center">Features:</h3>
-<h4 align="center">With features like excluding specific containers, custom container labels, auto-prune when done and more.</h4>
+<h3 align="center">selective updates, exclude containers, custom labels, notification plugins, prune when done and more.</h3>
-<h4 align="center">Also see the fresh Podman fork <a href="https://github.com/sudo-kraken/podcheck">sudo-kraken/podcheck</a>!</h4>
+
 <h4 align="center">For Podman - see the fork <a href="https://github.com/sudo-kraken/podcheck">sudo-kraken/podcheck</a>!</h4>
 <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>
 ___
 ## :bell: Changelog
- **v0.5.2.1**: Rewrite of dependency downloads, jq can be installed with package manager or static binary.
+- **v0.6.0**: Refactored a lot of code, cleaner logic and syntax, safer variables.
- **v0.5.1**: DEPENDENCY WARNING: now requires **jq**. + Upstreaming changes from [sudo-kraken/podcheck](https://github.com/sudo-kraken/podcheck)
+    - Safer bash options with `set -euo pipefail`, `shopt -s nullglob` and `failglob`.
- **v0.5.0**: Rewritten notify logic - all templates are adjusted and should be migrated!
+    - Added a `default.conf` for user settings - persistent through updates.
-    - Copy the custom settings from your current template to the new version of the same template.
+    - Added `notify_slack.sh` template for slack curl api.
-    - Look into, copy and customize the `urls.list` file if that's of interest.
+- **v0.5.8**: Added version checks to all templates and a notification if a new template is released.
-    - Other changes: 
+- **v0.5.7**: Rewritten templates - now with a function to notify when there's a new Dockcheck release.
-        - Added Discord notify template.
+    - Manually migrate your current `notify.sh` settings to a new template for new functionality.
-        - Verbosity changed of `regctl`.
+- **v0.5.6.1**: Async xargs hotfix - due to errors `failed to request manifest head ... context canceled`
- **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)
+    - Defaulted subprocess to 1 with `MaxAsync=1`, increase to find a stable value in your environment.
- **v0.4.8**: Rewrote prune logic to not prompt with options `-a|-y` or `-n`. Auto prune with `-p`.
+    - Added `-x N` option to pass `MaxAsync` value at runtime.
    - To disable xargs `-P` flag (max processes) all together, set `MaxAsync` to 0.
 - **v0.5.6.0**: Heavily improved performance due to async checking for updates.
 ___
@@ -39,8 +44,9 @@ $ ./dockcheck.sh -h
 Syntax:     dockcheck.sh [OPTION] [part of name to filter]
 Example:    dockcheck.sh -y -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.
@@ -52,8 +58,9 @@ Options:"
 -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.
 -v     Prints current version.
 -x N   Set max asynchronous subprocesses, 1 default, 0 to disable, 32+ tested.
 ```
 ### Basic example:
@@ -80,14 +87,16 @@ ___
 ## :nut_and_bolt: Dependencies
 - Running docker (duh) and compose, either standalone or plugin. (see [Podman fork](https://github.com/sudo-kraken/podcheck)  
 - Bash shell or compatible shell of at least v4.3
- [jq](https://github.com/jqlang/jq) 
+  - 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**.
+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
@@ -95,14 +104,22 @@ 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.  
 Run it scheduled with `-ni` to only get notified when there's updates available!  
 Will also send a notification when `dockcheck.sh` itself has an update.
 Use a `notify_X.sh` template file from the **notify_templates** directory, copy it to `notify.sh` alongside the script, modify it to your needs! (notify.sh is added to .gitignore)  
 **Current templates:**
@@ -118,13 +135,14 @@ Use a `notify_X.sh` template file from the **notify_templates** directory, copy
 - [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
-There's a function to use a lookup-file to add release note URL's to the notification message.    
+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.  
 The output of the notification will look something like this:
 ```
 Containers on hostname with updates available:
@@ -135,6 +153,22 @@ 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: 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>  
 ## :bookmark: Labels
 Optionally add labels to compose-files. Currently these are the usable labels:
 ```
@@ -165,7 +199,15 @@ 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 {
@@ -186,7 +228,7 @@ function dchk {
 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. 
+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`.
 ## :scroll: License
@@ -195,8 +237,8 @@ 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)
 ___
 ### :floppy_disk: The [story](https://mag37.org/posts/project_dockcheck/) behind it. 1 year in retrospect.
--- a/addons/prometheus/README.md
+++ b/addons/prometheus/README.md
@@ -0,0 +1,61 @@
 ## [Prometheus](https://github.com/prometheus/prometheus) and [node_exporter](https://github.com/prometheus/node_exporter)
 Dockcheck is capable to export metrics to prometheus via the text file collector provided by the node_exporter.
 In order to do so the -c flag has to be specified followed by the file path that is configured in the text file collector of the node_exporter.
 A simple cron job can be configured to export these metrics on a regular interval as shown in the sample below:
 ```
 0 1 * * * /root/dockcheck.sh -n -c /var/lib/node_exporter/textfile_collector
 ```
 The following metrics are exported to prometheus
 ```
 # HELP dockcheck_images_analyzed Docker images that have been analyzed
 # TYPE dockcheck_images_analyzed gauge
 dockcheck_images_analyzed 22
 # HELP dockcheck_images_outdated Docker images that are outdated
 # TYPE dockcheck_images_outdated gauge
 dockcheck_images_outdated 7
 # HELP dockcheck_images_latest Docker images that are outdated
 # TYPE dockcheck_images_latest gauge
 dockcheck_images_latest 14
 # HELP dockcheck_images_error Docker images with analysis errors
 # TYPE dockcheck_images_error gauge
 dockcheck_images_error 1
 # HELP dockcheck_images_analyze_timestamp_seconds Last dockercheck run time
 # TYPE dockcheck_images_analyze_timestamp_seconds gauge
 dockcheck_images_analyze_timestamp_seconds 1737924029
 ```
 Once those metrics are exported they can be used to define alarms as shown below
 ```
 - alert: dockcheck_images_outdated
  expr: sum by(instance) (dockcheck_images_outdated) > 0
  for: 15s
  labels:
    severity: warning
  annotations:
    summary: "{{ $labels.instance }} has {{ $value }} outdated docker images."
    description: "{{ $labels.instance }} has {{ $value }} outdated docker images."
 - alert: dockcheck_images_error
  expr: sum by(instance) (dockcheck_images_error) > 0
  for: 15s
  labels:
    severity: warning
  annotations:
    summary: "{{ $labels.instance }} has {{ $value }} docker images having an error."
    description: "{{ $labels.instance }} has {{ $value }} docker images having an error."
 - alert: dockercheck_image_last_analyze
  expr: (time() - dockcheck_images_analyze_timestamp_seconds) > (3600 * 24 * 3)
  for: 15s
  labels:
    severity: warning
  annotations:
    summary: "{{ $labels.instance }} has not updated the dockcheck statistics for more than  3 days."
    description: "{{ $labels.instance }} has not updated the dockcheck statistics for more than 3 days."
 ```
 There is a reference Grafana dashboard in [grafana/grafana_dashboard.json](./grafana/grafana_dashboard.json).
 ![](./grafana/grafana_dashboard.png)
--- a/addons/prometheus/grafana/grafana_dashboard.json
+++ b/addons/prometheus/grafana/grafana_dashboard.json
@@ -0,0 +1,382 @@
 {
  "__inputs": [
    {
      "name": "DS_PROMETHEUS",
      "label": "prometheus",
      "description": "",
      "type": "datasource",
      "pluginId": "prometheus",
      "pluginName": "Prometheus"
    }
  ],
  "__elements": {},
  "__requires": [
    {
      "type": "grafana",
      "id": "grafana",
      "name": "Grafana",
      "version": "11.4.0"
    },
    {
      "type": "datasource",
      "id": "prometheus",
      "name": "Prometheus",
      "version": "1.0.0"
    },
    {
      "type": "panel",
      "id": "table",
      "name": "Table",
      "version": ""
    }
  ],
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": {
          "type": "grafana",
          "uid": "-- Grafana --"
        },
        "enable": true,
        "hide": true,
        "iconColor": "rgba(0, 211, 255, 1)",
        "name": "Annotations & Alerts",
        "type": "dashboard"
      }
    ]
  },
  "editable": true,
  "fiscalYearStartMonth": 0,
  "graphTooltip": 0,
  "id": null,
  "links": [],
  "panels": [
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${DS_PROMETHEUS}"
      },
      "fieldConfig": {
        "defaults": {
          "color": {
            "mode": "thresholds"
          },
          "custom": {
            "align": "auto",
            "cellOptions": {
              "type": "auto"
            },
            "inspect": false
          },
          "mappings": [],
          "thresholds": {
            "mode": "absolute",
            "steps": [
              {
                "color": "green",
                "value": null
              },
              {
                "color": "red",
                "value": 80
              }
            ]
          }
        },
        "overrides": [
          {
            "matcher": {
              "id": "byName",
              "options": "last_analyze_timestamp"
            },
            "properties": [
              {
                "id": "unit",
                "value": "dateTimeAsIso"
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "last_analyze_since"
            },
            "properties": [
              {
                "id": "unit",
                "value": "s"
              },
              {
                "id": "custom.cellOptions",
                "value": {
                  "mode": "gradient",
                  "type": "color-background"
                }
              },
              {
                "id": "thresholds",
                "value": {
                  "mode": "absolute",
                  "steps": [
                    {
                      "color": "green",
                      "value": null
                    },
                    {
                      "color": "red",
                      "value": 259200
                    }
                  ]
                }
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "images_outdated"
            },
            "properties": [
              {
                "id": "custom.cellOptions",
                "value": {
                  "mode": "gradient",
                  "type": "color-background"
                }
              },
              {
                "id": "thresholds",
                "value": {
                  "mode": "absolute",
                  "steps": [
                    {
                      "color": "green",
                      "value": null
                    },
                    {
                      "color": "red",
                      "value": 1
                    }
                  ]
                }
              }
            ]
          },
          {
            "matcher": {
              "id": "byName",
              "options": "images_error"
            },
            "properties": [
              {
                "id": "custom.cellOptions",
                "value": {
                  "mode": "gradient",
                  "type": "color-background"
                }
              },
              {
                "id": "thresholds",
                "value": {
                  "mode": "absolute",
                  "steps": [
                    {
                      "color": "green",
                      "value": null
                    },
                    {
                      "color": "red",
                      "value": 1
                    }
                  ]
                }
              }
            ]
          }
        ]
      },
      "gridPos": {
        "h": 14,
        "w": 24,
        "x": 0,
        "y": 0
      },
      "id": 2,
      "options": {
        "cellHeight": "sm",
        "footer": {
          "countRows": false,
          "fields": "",
          "reducer": [
            "sum"
          ],
          "show": false
        },
        "frameIndex": 1,
        "showHeader": true,
        "sortBy": []
      },
      "pluginVersion": "11.4.0",
      "targets": [
        {
          "disableTextWrap": false,
          "editorMode": "code",
          "exemplar": false,
          "expr": "sum by(instance) (dockcheck_images_analyzed)",
          "format": "table",
          "fullMetaSearch": false,
          "hide": false,
          "includeNullMetadata": true,
          "instant": true,
          "interval": "",
          "legendFormat": "{{instance}}",
          "range": false,
          "refId": "dockcheck_images_analyzed",
          "useBackend": false,
          "datasource": {
            "type": "prometheus",
            "uid": "${DS_PROMETHEUS}"
          }
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${DS_PROMETHEUS}"
          },
          "disableTextWrap": false,
          "editorMode": "code",
          "exemplar": false,
          "expr": "sum by(instance) (dockcheck_images_outdated)",
          "format": "table",
          "fullMetaSearch": false,
          "hide": false,
          "includeNullMetadata": true,
          "instant": true,
          "legendFormat": "{{instance}}",
          "range": false,
          "refId": "dockcheck_images_outdated",
          "useBackend": false
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${DS_PROMETHEUS}"
          },
          "disableTextWrap": false,
          "editorMode": "code",
          "exemplar": false,
          "expr": "sum by(instance) (dockcheck_images_latest)",
          "format": "table",
          "fullMetaSearch": false,
          "hide": false,
          "includeNullMetadata": true,
          "instant": true,
          "legendFormat": "{{instance}}",
          "range": false,
          "refId": "dockcheck_images_latest",
          "useBackend": false
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${DS_PROMETHEUS}"
          },
          "editorMode": "code",
          "exemplar": false,
          "expr": "sum by(instance) (dockcheck_images_error)",
          "format": "table",
          "hide": false,
          "instant": true,
          "legendFormat": "{{instance}}",
          "range": false,
          "refId": "dockcheck_images_error"
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${DS_PROMETHEUS}"
          },
          "editorMode": "code",
          "exemplar": false,
          "expr": "dockcheck_images_analyze_timestamp_seconds * 1000",
          "format": "table",
          "hide": false,
          "instant": true,
          "legendFormat": "{{instance}}",
          "range": false,
          "refId": "dockcheck_images_analyze_timestamp_seconds"
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${DS_PROMETHEUS}"
          },
          "editorMode": "code",
          "exemplar": false,
          "expr": "time() - dockcheck_images_analyze_timestamp_seconds",
          "format": "table",
          "hide": false,
          "instant": true,
          "legendFormat": "{{instance}}",
          "range": false,
          "refId": "dockcheck_images_last_analyze"
        }
      ],
      "title": "Dockcheck Status",
      "transformations": [
        {
          "id": "merge",
          "options": {}
        },
        {
          "id": "organize",
          "options": {
            "excludeByName": {
              "Time": true,
              "__name__": true,
              "job": true
            },
            "includeByName": {},
            "indexByName": {
              "Time": 0,
              "Value #dockcheck_images_analyze_timestamp_seconds": 2,
              "Value #dockcheck_images_analyzed": 4,
              "Value #dockcheck_images_error": 7,
              "Value #dockcheck_images_last_analyze": 3,
              "Value #dockcheck_images_latest": 5,
              "Value #dockcheck_images_outdated": 6,
              "instance": 1,
              "job": 8
            },
            "renameByName": {
              "Value #A": "analyze_timestamp",
              "Value #dockcheck_images_analyze_timestamp_seconds": "last_analyze_timestamp",
              "Value #dockcheck_images_analyzed": "images_analyzed",
              "Value #dockcheck_images_error": "images_error",
              "Value #dockcheck_images_last_analyze": "last_analyze_since",
              "Value #dockcheck_images_latest": "images_latest",
              "Value #dockcheck_images_outdated": "images_outdated"
            }
          }
        }
      ],
      "type": "table"
    }
  ],
  "schemaVersion": 40,
  "tags": [],
  "templating": {
    "list": []
  },
  "time": {
    "from": "now-6h",
    "to": "now"
  },
  "timepicker": {},
  "timezone": "browser",
  "title": "Dockcheck Status",
  "uid": "feb4pv3kv1hxca",
  "version": 17,
  "weekStart": ""
 }
--- a/addons/prometheus/grafana/grafana_dashboard.png
+++ b/addons/prometheus/grafana/grafana_dashboard.png
--- a/addons/prometheus/prometheus_collector.sh
+++ b/addons/prometheus/prometheus_collector.sh
@@ -0,0 +1,28 @@
 prometheus_exporter() {
  checkedImages=$(($1 + $2 + $3))
  checkTimestamp=$(date +%s)
  promFileContent=()
  promFileContent+=("# HELP dockcheck_images_analyzed Docker images that have been analyzed")
  promFileContent+=("# TYPE dockcheck_images_analyzed gauge")
  promFileContent+=("dockcheck_images_analyzed $checkedImages")
  promFileContent+=("# HELP dockcheck_images_outdated Docker images that are outdated")
  promFileContent+=("# TYPE dockcheck_images_outdated gauge")
  promFileContent+=("dockcheck_images_outdated ${#GotUpdates[@]}")
  promFileContent+=("# HELP dockcheck_images_latest Docker images that are outdated")
  promFileContent+=("# TYPE dockcheck_images_latest gauge")
  promFileContent+=("dockcheck_images_latest ${#NoUpdates[@]}")
  promFileContent+=("# HELP dockcheck_images_error Docker images with analysis errors")
  promFileContent+=("# TYPE dockcheck_images_error gauge")
  promFileContent+=("dockcheck_images_error ${#GotErrors[@]}")
  promFileContent+=("# HELP dockcheck_images_analyze_timestamp_seconds Last dockercheck run time")
  promFileContent+=("# TYPE dockcheck_images_analyze_timestamp_seconds gauge")
  promFileContent+=("dockcheck_images_analyze_timestamp_seconds $checkTimestamp")
  printf "%s\n" "${promFileContent[@]}" > "$CollectorTextFileDirectory/dockcheck_info.prom\$\$"
  mv -f "$CollectorTextFileDirectory/dockcheck_info.prom\$\$" "$CollectorTextFileDirectory/dockcheck_info.prom"
 }
--- a/default.config
+++ b/default.config
@@ -0,0 +1,20 @@
 ### Custom user variables
 # Copy this file to "dockcheck.config" to make it active
 # Can be placed in ~/.config/ or alongside dockcheck.sh
 #
 # Uncomment and set your preferred configuration variables here
 # This will not be replaced on updates
 #Timeout=10    # Set a timeout (in seconds) per container for registry checkups.
 #MaxAsync=1    # Set max asynchronous subprocesses, 1 default, 0 to disable.
 #BarWidth=50    # The character width of the progress bar
 #AutoMode=true    # Automatic updates, without interaction.
 #DontUpdate=true    # No updates; only checking availability without interaction.
 #AutoPrune=false    # Auto-Prune dangling images after update.
 #Notify=false    # Inform - send a preconfigured notification.
 #Exclude="one,two"    # Exclude containers, separated by comma.
 #DaysOld="5"    # Only update to new images that are N+ days old. Lists too recent with +prefix and age. 2xSlower.
 #Stopped="-a"    # Include stopped containers in the check. (Logic: docker ps -a).
 #OnlyLabel=false    # Only update if label is set. See readme.
 #ForceRestartStacks=false    # Force stack restart after update. Caution.
 #DRunUp=false    # Allow updating images for docker run, wont update the container.
--- a/dockcheck.sh
+++ b/dockcheck.sh
@@ -1,17 +1,28 @@
 #!/usr/bin/env bash
-VERSION="v0.5.2.1"
+VERSION="v0.6.0"
-### ChangeNotes: DEPENDENCY REMINDER: now requires jq. UPDATE: Rewrite of dependency installer.
+### ChangeNotes: uservars file added. Lots of code refactoring, please report any bugs.
 Github="https://github.com/mag37/dockcheck"
 RawUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/dockcheck.sh"
 set -euo pipefail
 shopt -s nullglob
 shopt -s failglob
 # Variables for self updating
 ScriptArgs=( "$@" )
 ScriptPath="$(readlink -f "$0")"
 ScriptWorkDir="$(dirname "$ScriptPath")"
 # Check if there's a new release of the script
-LatestRelease="$(curl -s -r 0-50 $RawUrl | sed -n "/VERSION/s/VERSION=//p" | tr -d '"')"
+LatestRelease="$(curl -s -r 0-50 "$RawUrl" | sed -n "/VERSION/s/VERSION=//p" | tr -d '"')"
-LatestChanges="$(curl -s -r 0-200 $RawUrl | sed -n "/ChangeNotes/s/# ChangeNotes: //p")"
+LatestChanges="$(curl -s -r 0-200 "$RawUrl" | sed -n "/ChangeNotes/s/# ChangeNotes: //p")"
 # User customizable defaults
 if [[ -s "${HOME}/.config/dockcheck.config" ]]; then
  source "${HOME}/.config/dockcheck.config"
 elif [[ -s "${ScriptWorkDir}/dockcheck.config" ]]; then
  source "${ScriptWorkDir}/dockcheck.config"
 fi
 # Help Function
 Help() {
@@ -20,24 +31,49 @@ Help() {
  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 "-h     Print this Help."
  echo "-i     Inform - send a preconfigured notification."
  echo "-l     Only update if label is set. See readme."
-  echo "-m     Monochrome mode, no printf color codes."
+  echo "-m     Monochrome mode, no printf colour codes."
-  echo "-n     No updates; only checking availability."
+  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 "-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=${AutoPrune:=false}
 OnlyLabel=${OnlyLabel:=false}
 Notify=${Notify:=false}
 ForceRestartStacks=${ForceRestartStacks:=false}
 DRunUp=${DRunUp:=false}
 Stopped=${Stopped:=""}
 CollectorTextFileDirectory=${CollectorTextFileDirectory:-}
 Exclude=${Exclude:-}
 DaysOld=${DaysOld:-}
 Excludes=()
 GotUpdates=()
 NoUpdates=()
 GotErrors=()
 SelectedUpdates=()
 regbin=""
 jqbin=""
 # Colours
 c_red="\033[0;31m"
 c_green="\033[0;32m"
 c_yellow="\033[0;33m"
@@ -45,76 +81,103 @@ c_blue="\033[0;34m"
 c_teal="\033[0;36m"
 c_reset="\033[0m"
-Timeout=10
+while getopts "aynpfrhlisvmc:e:d:t:x:" options; do
 Stopped=""
 while getopts "aynpfrhlisvme:d:t:" options; do
  case "${options}" in
-    a|y) AutoUp="yes" ;;
+    a|y) AutoMode=true ;;
-    n)   AutoUp="no" ;;
+    c)   CollectorTextFileDirectory="${OPTARG}" ;;
-    r)   DRunUp="yes" ;;
+    n)   DontUpdate=true; AutoMode=true;;
-    p)   AutoPrune="yes" ;;
+    r)   DRunUp=true ;;
    p)   AutoPrune=true ;;
    l)   OnlyLabel=true ;;
    f)   ForceRestartStacks=true ;;
-    i)   [ -s "$ScriptWorkDir"/notify.sh ] && { source "$ScriptWorkDir"/notify.sh ; Notify="yes" ; } ;;
+    i)   Notify=true ;;
    e)   Exclude=${OPTARG} ;;
    m)   declare c_{red,green,yellow,blue,teal,reset}="" ;;
    s)   Stopped="-a" ;;
    t)   Timeout="${OPTARG}" ;;
-    v)   printf "%s\n" "$VERSION" ; exit 0 ;;
+    v)   printf "%s\n" "$VERSION"; exit 0 ;;
-    d)   DaysOld=${OPTARG}
+    x)   MaxAsync=${OPTARG} ;;
-         if ! [[ $DaysOld =~ ^[0-9]+$ ]] ; then { printf "Days -d argument given (%s) is not a number.\n" "${DaysOld}" ; exit 2 ; } ; fi ;;
+    d)   DaysOld=${OPTARG} ;;
-    h|*) Help ; exit 2 ;;
+    h|*) Help; exit 2 ;;
  esac
 done
 shift "$((OPTIND-1))"
-# Self-update function
+# Set $1 to a variable for name filtering later
 SearchName="${1:-}"
 # Setting up options and sourcing functions
 if [[ "$DontUpdate" == true ]]; then AutoMode=true; fi
 if [[ "$Notify" == true ]]; then
  if [[ -s "${ScriptWorkDir}/notify.sh" ]]; then
    source "${ScriptWorkDir}/notify.sh"
  else Notify=false
  fi
 fi
 if [[ -n "$Exclude" ]]; then
  IFS=',' read -ra Excludes <<< "$Exclude"
  unset IFS
 fi
 if [[ -n "$DaysOld" ]]; then
  if ! [[ $DaysOld =~ ^[0-9]+$ ]]; then
    printf "Days -d argument given (%s) is not a number.\n" "$DaysOld"
    exit 2
  fi
 fi
 if [[ -n "$CollectorTextFileDirectory" ]]; then
  if ! [[ -d  $CollectorTextFileDirectory ]]; then
    printf "The directory (%s) does not exist.\n" "$CollectorTextFileDirectory"
    exit 2
  else
    source "${ScriptWorkDir}/addons/prometheus/prometheus_collector.sh"
  fi
 fi
 self_update_curl() {
  cp "$ScriptPath" "$ScriptPath".bak
-  if [[ $(command -v curl) ]]; then
+  if command -v curl &>/dev/null; then
-    curl -L $RawUrl > "$ScriptPath" ; chmod +x "$ScriptPath"
+    curl -L $RawUrl > "$ScriptPath"; chmod +x "$ScriptPath"
    printf "\n%s\n" "--- starting over with the updated version ---"
    exec "$ScriptPath" "${ScriptArgs[@]}" # run the new script with old arguments
    exit 1 # Exit the old instance
-  elif [[ $(command -v wget) ]]; then
+  elif command -v wget &>/dev/null; then
-    wget $RawUrl -O "$ScriptPath" ; chmod +x "$ScriptPath"
+    wget $RawUrl -O "$ScriptPath"; chmod +x "$ScriptPath"
    printf "\n%s\n" "--- starting over with the updated version ---"
    exec "$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"
  fi
 }
 self_update() {
-  cd "$ScriptWorkDir" || { printf "Path error, skipping update.\n" ; return ; }
+  cd "$ScriptWorkDir" || { printf "Path error, skipping update.\n"; return; }
-  if [[ $(command -v git) ]] && [[ "$(git ls-remote --get-url 2>/dev/null)" =~ .*"mag37/dockcheck".* ]] ; then
+  if command -v git &>/dev/null && [[ "$(git ls-remote --get-url 2>/dev/null)" =~ .*"mag37/dockcheck".* ]]; then
    printf "\n%s\n" "Pulling the latest version."
-    git pull --force || { printf "Git error, manually pull/clone.\n" ; return ; }
+    git pull --force || { printf "Git error, manually pull/clone.\n"; return; }
    printf "\n%s\n" "--- starting over with the updated version ---"
-    cd - || { printf "Path error.\n" ; return ; }
+    cd - || { printf "Path error.\n"; return; }
    exec "$ScriptPath" "${ScriptArgs[@]}" # run the new script with old arguments
-    exit 1 # exit the old instance
+    exit 0 # exit the old instance
  else
-    cd - || { printf "Path error.\n" ; return ; }
+    cd - || { printf "Path error.\n"; return; }
    self_update_curl
  fi
 }
 # Choose from list function
 choosecontainers() {
-  while [[ -z "$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
+      for CC in $ChoiceClean; do
-        if [[ "$CC" -lt 1 || "$CC" -gt $UpdCount ]] ; then # Reset choice if out of bounds
+        if [[ "$CC" -lt 1 || "$CC" -gt $UpdCount ]]; then # Reset choice if out of bounds
-          echo "Number not in list: $CC" ; unset ChoiceClean ; break 1
+          echo "Number not in list: $CC"; unset ChoiceClean; break 1
        else
          SelectedUpdates+=( "${GotUpdates[$CC-1]}" )
        fi
@@ -127,9 +190,10 @@ choosecontainers() {
 }
 datecheck() {
-  ImageDate=$($regbin -v error image inspect "$RepoUrl" --format='{{.Created}}' | cut -d" " -f1 )
+  ImageDate=$("$regbin" -v error image inspect "$RepoUrl" --format='{{.Created}}' | cut -d" " -f1)
-  ImageAge=$(( ( $(date +%s) - $(date -d "$ImageDate" +%s) )/86400 ))
+  ImageEpoch=$(date -d "$ImageDate" +%s 2>/dev/null) || ImageEpoch=$(date -f "%Y-%m-%d" -j "$ImageDate" +%s)
-  if [ "$ImageAge" -gt "$DaysOld" ] ; then
+  ImageAge=$(( ( $(date +%s) - ImageEpoch )/86400 ))
  if [[ "$ImageAge" -gt "$DaysOld" ]]; then
    return 0
  else
    return 1
@@ -139,107 +203,117 @@ datecheck() {
 progress_bar() {
  QueCurrent="$1"
  QueTotal="$2"
  BarWidth=${BarWidth:-50}
  ((Percent=100*QueCurrent/QueTotal))
-  ((Complete=50*Percent/100)) # Change first number for width (50)
+  ((Complete=BarWidth*Percent/100))
-  ((Left=50-Complete)) # Change first number for width (50)
+  ((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"
+  if [[ "$QueTotal" != "$QueCurrent" ]]; then
-  [[ "$QueTotal" == "$QueCurrent" ]] && printf "\r[%b%s%b] %s/%s \n" "$c_teal" "$BarComplete" "$c_reset" "$QueCurrent" "$QueTotal"
+    printf "\r[%s%s] %s/%s " "$BarComplete" "$BarLeft" "$QueCurrent" "$QueTotal"
  else
    printf "\r[%b%s%b] %s/%s \n" "$c_teal" "$BarComplete" "$c_reset" "$QueCurrent" "$QueTotal"
  fi
 }
 # Function to add user-provided urls to releasenotes
-releasenotes() { 
+releasenotes() {
-  for update in ${GotUpdates[@]}; do
+  for update in "${GotUpdates[@]}"; do
    found=false
    while read -r container url; do
-      [[ $update == $container ]] && Updates+=("$update  ->  $url") && found=true
+      if [[ "$update" == "$container" ]]; then Updates+=("$update  ->  $url"); found=true; fi
-    done < "$ScriptWorkDir"/urls.list
+    done < "${ScriptWorkDir}/urls.list"
-    [[ $found == false ]] && Updates+=("$update  ->  url missing") || continue
+    if [[ "$found" == false ]]; then Updates+=("$update  ->  url missing"); else continue; fi
  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
    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
 # Static binary downloader for dependencies
 binary_downloader() {
  BinaryName="$1"
  BinaryUrl="$2"
-  case "$(uname --machine)" in
+  case "$(uname -m)" in
    x86_64|amd64) architecture="amd64" ;;
    arm64|aarch64) architecture="arm64";;
-    *) printf "\n%bArchitecture not supported, exiting.%b\n" "$c_red" "$c_reset" ; exit 1;;
+    *) printf "\n%bArchitecture not supported, exiting.%b\n" "$c_red" "$c_reset"; exit 1;;
  esac
  GetUrl="${BinaryUrl/TEMP/"$architecture"}"
-  if [[ $(command -v curl) ]]; then curl -L $GetUrl > "$ScriptWorkDir/$BinaryName" ; 
+  if command -v curl &>/dev/null; then curl -L "$GetUrl" > "$ScriptWorkDir/$BinaryName";
-  elif [[ $(command -v wget) ]]; then wget $GetUrl -O "$ScriptWorkDir/$BinaryName" ; 
+  elif command -v wget &>/dev/null; then wget "$GetUrl" -O "$ScriptWorkDir/$BinaryName";
  else printf "%s\n" "curl/wget not available - get $BinaryName manually from the repo link, exiting."; exit 1;
  fi
  [[ -f "$ScriptWorkDir/$BinaryName" ]] && chmod +x "$ScriptWorkDir/$BinaryName"
 }
 distro_checker() {
-  if [[ -f /etc/arch-release ]] ; then PkgInstaller="pacman -S"
+  if [[ -f /etc/arch-release ]]; then PkgInstaller="pacman -S"
-  elif [[ -f /etc/redhat-release ]] ; then PkgInstaller="dnf install"
+  elif [[ -f /etc/redhat-release ]]; then PkgInstaller="sudo dnf install"
-  elif [[ -f /etc/SuSE-release ]] ; then PkgInstaller="zypper install"
+  elif [[ -f /etc/SuSE-release ]]; then PkgInstaller="sudo zypper install"
-  elif [[ -f /etc/debian_version ]] ; then PkgInstaller="apt-get install"
+  elif [[ -f /etc/debian_version ]]; then PkgInstaller="sudo apt-get install"
-  else PkgInstaller="ERROR" ; printf "\n%bNo distribution could be determined%b, falling back to static binary.\n" "$c_yellow" "$c_reset"
+  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 for jq in PATH or directory
+# Dependency check + installer function
-if [[ $(command -v jq) ]]; then jqbin="jq" ;
+dependency_check() {
-elif [[ -f "$ScriptWorkDir/jq" ]]; then jqbin="$ScriptWorkDir/jq" ;
+  AppName="$1"
-else
+  AppVar="$2"
-  printf "%s\n" "Required dependency 'jq' missing, do you want to install it?"
+  AppUrl="$3"
-  read -r -p "y: With packagemanager (sudo). / s: Download static binary. y/s/[n] " GetJq
+  if command -v "$AppName" &>/dev/null; then export "$AppVar"="$AppName";
-  GetJq=${GetJq:-no} # set default to no if nothing is given
+  elif [[ -f "$ScriptWorkDir/$AppName" ]]; then export "$AppVar"="$ScriptWorkDir/$AppName";
-  if [[ "$GetJq" =~ [yYsS] ]] ; then
+  else
-    [[ "$GetJq" =~ [yY] ]] && distro_checker
+    printf "%s\n" "Required dependency '$AppName' missing, do you want to install it?"
-    if [[ -n "$PkgInstaller" && "$PkgInstaller" != "ERROR" ]] ; then 
+    read -r -p "y: With packagemanager (sudo). / s: Download static binary. y/s/[n] " GetBin
-      (sudo $PkgInstaller jq) ; PkgExitcode="$?"
+    GetBin=${GetBin:-no} # set default to no if nothing is given
-      [[ "$PkgExitcode" == 0 ]] && jqbin="jq" || printf "\n%bPackagemanager install failed%b, falling back to static binary.\n" "$c_yellow" "$c_reset"
+    if [[ "$GetBin" =~ [yYsS] ]]; then
      [[ "$GetBin" =~ [yY] ]] && distro_checker
      if [[ -n "${PkgInstaller:-}" && "${PkgInstaller:-}" != "ERROR" ]]; then
        [[ $(uname -s) == "Darwin" && "$AppName" == "regctl" ]] && AppName="regclient"
        ("$PkgInstaller" "$AppName"); PkgExitcode="$?" && AppName="$1"
        if [[ "$PkgExitcode" == 0 ]]; then { export "$AppVar"="$AppName" && printf "\n%b%b installed.%b\n" "$c_green" "$AppName" "$c_reset"; }
        else printf "\n%bPackagemanager install failed%b, falling back to static binary.\n" "$c_yellow" "$c_reset"
        fi
      fi
      if [[ "$GetBin" =~ [sS] || "$PkgInstaller" == "ERROR" || "$PkgExitcode" != 0 ]]; then
          binary_downloader "$AppName" "$AppUrl"
          [[ -f "$ScriptWorkDir/$AppName" ]] && { export "$AppVar"="$ScriptWorkDir/$1" && printf "\n%b%b downloaded.%b\n" "$c_green" "$AppName" "$c_reset"; }
      fi
    else printf "\n%bDependency missing, exiting.%b\n" "$c_red" "$c_reset"; exit 1;
    fi
    if [[ "$GetJq" =~ [nN] || "$PkgInstaller" == "ERROR" || "$PkgExitcode" != 0 ]] ; then
        binary_downloader "jq" "https://github.com/jqlang/jq/releases/latest/download/jq-linux-TEMP"
        [[ -f "$ScriptWorkDir/jq" ]] && jqbin="$ScriptWorkDir/jq" 
    fi
  else printf "\n%bDependency missing, exiting.%b\n" "$c_red" "$c_reset" ; exit 1 ;
  fi
-fi
+  # Final check if binary is correct
-# Final check if binary is correct
+  [[ "$1" == "jq" ]] && VerFlag="--version"
-$jqbin --version &> /dev/null  || { printf "%s\n" "jq is not working - try to remove it and re-download it, exiting."; exit 1; }
+  [[ "$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; }
 }
-# Dependency check for regctl in PATH or directory
+# Numbered List function
-if [[ $(command -v regctl) ]]; then regbin="regctl" ;
+options() {
-elif [[ -f "$ScriptWorkDir/regctl" ]]; then regbin="$ScriptWorkDir/regctl" ;
+  num=1
-else
+  for i in "${GotUpdates[@]}"; do
-  read -r -p "Required dependency 'regctl' missing, do you want it downloaded? y/[n] " GetRegctl
+    echo "$num) $i"
-  if [[ "$GetRegctl" =~ [yY] ]] ; then
+    ((num++))
-    binary_downloader "regctl" "https://github.com/regclient/regclient/releases/latest/download/regctl-linux-TEMP"
+  done
-    [[ -f "$ScriptWorkDir/regctl" ]] && regbin="$ScriptWorkDir/regctl" 
+  }
-  else printf "\n%bDependency missing, exiting.%b\n" "$c_red" "$c_reset" ; exit 1 ;
+
 # Version check & initiate self update
 if [[ "$VERSION" != "$LatestRelease" ]]; then
  printf "New version available! %b%s%b ⇒ %b%s%b \n Change Notes: %s \n" "$c_yellow" "$VERSION" "$c_reset" "$c_green" "$LatestRelease" "$c_reset" "$LatestChanges"
  if [[ "$AutoMode" == false ]]; then
    read -r -p "Would you like to update? y/[n]: " SelfUpdate
    [[ "$SelfUpdate" =~ [yY] ]] && self_update
  else
    [[ "$Notify" == true ]] && { [[ $(type -t dockcheck_notification) == function ]] && dockcheck_notification "$VERSION" "$LatestRelease" "$LatestChanges" || printf "Could not source notification function.\n"; }
  fi
 fi
-# Final check if binary is correct
+
-$regbin version &> /dev/null  || { printf "%s\n" "regctl is not working - try to remove it and re-download it, exiting."; exit 1; }
+dependency_check "regctl" "regbin" "https://github.com/regclient/regclient/releases/latest/download/regctl-linux-TEMP"
 dependency_check "jq" "jqbin" "https://github.com/jqlang/jq/releases/latest/download/jq-linux-TEMP"
 # Check docker compose binary
-if docker compose version &> /dev/null ; then DockerBin="docker compose" ;
+if docker compose version &>/dev/null; then DockerBin="docker compose" ;
-elif docker-compose -v &> /dev/null; then DockerBin="docker-compose" ;
+elif docker-compose -v &>/dev/null; then DockerBin="docker-compose" ;
-elif docker -v &> /dev/null; then
+elif docker -v &>/dev/null; then
  printf "%s\n" "No docker compose binary available, using plain docker (Not recommended!)"
  printf "%s\n" "'docker run' will ONLY update images, not the container itself."
 else
@@ -247,17 +321,8 @@ else
  exit 1
 fi
 # Numbered List function
 options() {
 num=1
 for i in "${GotUpdates[@]}"; do
  echo "$num) $i"
  ((num++))
 done
 }
 # Listing typed exclusions
-if [[ -n ${Excludes[*]} ]] ; then
+if [[ -n ${Excludes[*]} ]]; then
  printf "\n%bExcluding these names:%b\n" "$c_blue" "$c_reset"
  printf "%s\n" "${Excludes[@]}"
  printf "\n"
@@ -268,9 +333,9 @@ ContCount=$(docker ps $Stopped --filter "name=$SearchName" --format '{{.Names}}'
 RegCheckQue=0
 # Testing and setting timeout binary
-t_out=$(command -v timeout)
+t_out=$(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}"
@@ -278,30 +343,69 @@ if [[ $t_out ]]; then
 else t_out=""
 fi
-# Check the image-hash of every running container VS the registry
+check_image() {
-for i in $(docker ps $Stopped --filter "name=$SearchName" --format '{{.Names}}') ; do
+  i="$1"
-  ((RegCheckQue+=1))
+  local Excludes=($Excludes_string)
-  progress_bar "$RegCheckQue" "$ContCount"
+  for e in "${Excludes[@]}"; do
-  # Looping every item over the list of excluded names and skipping
+    if [[ "$i" == "$e" ]]; then
-  for e in "${Excludes[@]}" ; do [[ "$i" == "$e" ]] && continue 2 ; done
+      printf "%s\n" "Skip $i"
      return
    fi
  done
  local NoUpdates GotUpdates GotErrors
  ImageId=$(docker inspect "$i" --format='{{.Image}}')
  RepoUrl=$(docker inspect "$i" --format='{{.Config.Image}}')
-  LocalHash=$(docker image inspect "$RepoUrl" --format '{{.RepoDigests}}')
+  LocalHash=$(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 RegHash=$($t_out "$regbin" -v error image digest --list "$RepoUrl" 2>&1); then
-    if [[ "$LocalHash" = *"$RegHash"* ]] ; then
+    if [[ "$LocalHash" = *"$RegHash"* ]]; then
-      NoUpdates+=("$i")
+      printf "%s\n" "NoUpdates $i"
    else
-      if [[ -n "$DaysOld" ]] && ! datecheck ; then
+      if [[ -n "${DaysOld:-}" ]] && ! datecheck; then
-        NoUpdates+=("+$i ${ImageAge}d")
+        printf "%s\n" "NoUpdates +$i ${ImageAge}d"
      else
-        GotUpdates+=("$i")
+        printf "%s\n" "GotUpdates $i"
      fi
    fi
  else
-    # Here the RegHash is the result of an error code
+    printf "%s\n" "GotErrors $i - ${RegHash}"  # Reghash contains an error code here
    GotErrors+=("$i - ${RegHash}")
  fi
-done
+}
 # Make required functions and variables available to subprocesses
 export -f check_image datecheck
 export Excludes_string="${Excludes[*]}" # Can only export scalar variables
 export t_out regbin RepoUrl DaysOld
 # Check for POSIX xargs with -P option, fallback without async
 if (echo "test" | xargs -P 2 >/dev/null 2>&1) && [[ "$MaxAsync" != 0 ]]; then
  XargsAsync="-P $MaxAsync"
 else
  XargsAsync=""
  [[ "$MaxAsync" != 0 ]] && printf "%bMissing POSIX xargs, consider installing 'findutils' for asynchronous lookups.%b\n" "$c_red" "$c_reset"
 fi
 # Asynchronously check the image-hash of every running container VS the registry
 while read -r line; do
  ((RegCheckQue+=1))
  progress_bar "$RegCheckQue" "$ContCount"
  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'
@@ -309,34 +413,43 @@ NoUpdates=($(sort <<<"${NoUpdates[*]}"))
 GotUpdates=($(sort <<<"${GotUpdates[*]}"))
 unset IFS
 # Run the prometheus exporter function
 if [[ -n "${CollectorTextFileDirectory:-}" ]]; then
  if type -t send_notification &>/dev/null; then
    prometheus_exporter ${#NoUpdates[@]} ${#GotUpdates[@]} ${#GotErrors[@]}
  else
    printf "%s\n" "Could not source prometheus exporter function."
  fi
 fi
 # Define how many updates are available
 UpdCount="${#GotUpdates[@]}"
 # List what containers got updates or not
-if [[ -n ${NoUpdates[*]} ]] ; then
+if [[ -n ${NoUpdates[*]} ]]; then
  printf "\n%bContainers on latest version:%b\n" "$c_green" "$c_reset"
  printf "%s\n" "${NoUpdates[@]}"
 fi
-if [[ -n ${GotErrors[*]} ]] ; then
+if [[ -n ${GotErrors[*]} ]]; then
  printf "\n%bContainers with errors, won't get updated:%b\n" "$c_red" "$c_reset"
  printf "%s\n" "${GotErrors[@]}"
  printf "%binfo:%b 'unauthorized' often means not found in a public registry.\n" "$c_blue" "$c_reset"
 fi
-if [[ -n ${GotUpdates[*]} ]] ; then
+if [[ -n ${GotUpdates[*]} ]]; then
   printf "\n%bContainers with updates available:%b\n" "$c_yellow" "$c_reset"
-   [[ -z "$AutoUp" ]] && options || printf "%s\n" "${GotUpdates[@]}"
+   [[ "$AutoMode" == false ]] && options || printf "%s\n" "${GotUpdates[@]}"
-   [[ -n "$Notify" ]] && { [[ $(type -t send_notification) == function ]] && send_notification "${GotUpdates[@]}" || printf "Could not source notification function.\n" ; }
+   [[ "$Notify" == true ]] && { type -t send_notification &>/dev/null && send_notification "${GotUpdates[@]}" || printf "Could not source notification function.\n"; }
 fi
 # Optionally get updates if there's any
-if [ -n "$GotUpdates" ] ; then
+if [[ -n "${GotUpdates:-}" ]]; then
-  if [ -z "$AutoUp" ] ; then
+  if [[ "$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
    NumberofUpdates="${#SelectedUpdates[@]}"
    CurrentQue=0
    for i in "${SelectedUpdates[@]}"
@@ -347,21 +460,21 @@ if [ -n "$GotUpdates" ] ; then
      ContLabels=$(docker inspect "$i" --format '{{json .Config.Labels}}')
      ContImage=$(docker inspect "$i" --format='{{.Config.Image}}')
      ContPath=$($jqbin -r '."com.docker.compose.project.working_dir"' <<< "$ContLabels")
-      [ "$ContPath" == "null" ] && ContPath=""
+      [[ "$ContPath" == "null" ]] && ContPath=""
      ContConfigFile=$($jqbin -r '."com.docker.compose.project.config_files"' <<< "$ContLabels")
-      [ "$ContConfigFile" == "null" ] && ContConfigFile=""
+      [[ "$ContConfigFile" == "null" ]] && ContConfigFile=""
      ContName=$($jqbin -r '."com.docker.compose.service"' <<< "$ContLabels")
-      [ "$ContName" == "null" ] && ContName=""
+      [[ "$ContName" == "null" ]] && ContName=""
      ContEnv=$($jqbin -r '."com.docker.compose.project.environment_file"' <<< "$ContLabels")
-      [ "$ContEnv" == "null" ] && ContEnv=""
+      [[ "$ContEnv" == "null" ]] && ContEnv=""
      ContUpdateLabel=$($jqbin -r '."mag37.dockcheck.update"' <<< "$ContLabels")
-      [ "$ContUpdateLabel" == "null" ] && ContUpdateLabel=""
+      [[ "$ContUpdateLabel" == "null" ]] && ContUpdateLabel=""
      ContRestartStack=$($jqbin -r '."mag37.dockcheck.restart-stack"' <<< "$ContLabels")
-      [ "$ContRestartStack" == "null" ] && ContRestartStack=""
+      [[ "$ContRestartStack" == "null" ]] && ContRestartStack=""
      # Checking if compose-values are empty - hence started with docker run
-      if [ -z "$ContPath" ] ; then
+      if [[ -z "$ContPath" ]]; then
-        if [ "$DRunUp" == "yes" ] ; then
+        if [[ "$DRunUp" == true ]]; then
          docker pull "$ContImage"
          printf "%s\n" "$i got a new image downloaded, rebuild manually with preferred 'docker run'-parameters"
        else
@@ -370,29 +483,30 @@ if [ -n "$GotUpdates" ] ; then
        continue
      fi
      # cd to the compose-file directory to account for people who use relative volumes
-      cd "$ContPath" || { echo "Path error - skipping $i" ; continue ; }
+      cd "$ContPath" || { echo "Path error - skipping $i"; continue; }
      ## Reformatting path + multi compose
-      if [[ $ContConfigFile = '/'* ]] ; then
+      if [[ $ContConfigFile = '/'* ]]; then
-        CompleteConfs=$(for conf in ${ContConfigFile//,/ } ; do printf -- "-f %s " "$conf"; done)
+        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 ]] && { [[ "$ContUpdateLabel" != true ]] && { echo "No update label, skipping." ; continue ; } }
+      [[ "$OnlyLabel" == true ]] && { [[ "$ContUpdateLabel" != true ]] && { echo "No update label, skipping."; continue; } }
-      docker pull "$ContImage"
+      docker pull "$ContImage" || { printf "\n%bDocker error, exiting!%b\n" "$c_red" "$c_reset" ; exit 1; }
      # Check if the container got an environment file set and reformat it
-      if [ -n "$ContEnv" ]; then ContEnvs=$(for env in ${ContEnv//,/ } ; do printf -- "--env-file %s " "$env"; done) ; fi
+      ContEnvs=""
      if [[ -n "$ContEnv" ]]; then ContEnvs=$(for env in ${ContEnv//,/ }; do printf -- "--env-file %s " "$env"; done); fi
      # Check if the whole stack should be restarted
-      if [[ "$ContRestartStack" == true ]] || [[ "$ForceRestartStacks" == true ]] ; then
+      if [[ "$ContRestartStack" == true ]] || [[ "$ForceRestartStacks" == true ]]; then
-        $DockerBin ${CompleteConfs} stop ; $DockerBin ${CompleteConfs} ${ContEnvs} up -d
+        ${DockerBin} ${CompleteConfs} stop; ${DockerBin} ${CompleteConfs} ${ContEnvs} up -d
      else
-        $DockerBin ${CompleteConfs} ${ContEnvs} up -d ${ContName}
+        ${DockerBin} ${CompleteConfs} ${ContEnvs} up -d ${ContName}
      fi
    done
    printf "\n%bAll done!%b\n" "$c_green" "$c_reset"
-    if [[ -z "$AutoPrune" ]] && [[ -z "$AutoUp" ]]; then read -r -p "Would you like to prune dangling images? y/[n]: " AutoPrune ; fi
+    if [[ "$AutoPrune" == false ]] && [[ "$AutoMode" == false ]]; then read -r -p "Would you like to prune dangling images? y/[n]: " AutoPrune; fi
-    [[ "$AutoPrune" =~ [yY] ]] && docker image prune -f
+    if [[ "$AutoPrune" == true ]] || [[ "$AutoPrune" =~ [yY] ]]; then docker image prune -f; fi
  else
    printf "\nNo updates installed, exiting.\n"
  fi
--- a/extras/example.gif
+++ b/extras/example.gif
--- a/extras/example_old.gif
+++ b/extras/example_old.gif
--- a/notify_templates/notify_DSM.sh
+++ b/notify_templates/notify_DSM.sh
@@ -1,5 +1,6 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-# INFO: ssmtp is depcerated - consider to use msmtp instead.
+NOTIFY_DSM_VERSION="v0.1"
 # INFO: ssmtp is deprecated - consider to use msmtp instead.
 #
 # Copy/rename this file to notify.sh to enable the notification snipppet.
 # mSMTP/sSMTP has to be installed and configured manually.
@@ -17,10 +18,9 @@ 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_notification() {
 CfgFile="/usr/syno/etc/synosmtp.conf"
 # User variables:
@@ -34,19 +34,49 @@ 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 $FromHost
 Content-Type: text/plain; charset=UTF-8; format=flowed
 Content-Transfer-Encoding: 7bit
 $MessageBody
 From $SenderName
 __EOF
 # This ensures DSM's container manager will also see the update
 /var/packages/ContainerManager/target/tool/image_upgradable_checker
 }
 send_notification() {
 		[ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
 		UpdToString=$( printf '%s\\n' "${Updates[@]}" )
 		printf "\nSending email notification.\n"
 		MessageTitle="Updates available on"
 		# Setting the MessageBody variable here.
 		printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n\n$UpdToString"
 		trigger_notification
 }
 ### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
 ### to not send notifications when dockcheck itself has updates.
 dockcheck_notification() {
 		printf "\nSending email dockcheck notification.\n"
 		MessageTitle="New version of dockcheck available on"
 		# Setting the MessageBody variable here.
 		printf -v MessageBody "Installed version: $1\nLatest version: $2\n\nChangenotes: $3\n"
    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_DSM.sh"
    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_DSM_VERSION/s/NOTIFY_DSM_VERSION=//p" | tr -d '"')"
    if [[ "$NOTIFY_DSM_VERSION" != "$LatestNotifyRelease" ]] ; then
        printf -v NotifyUpdate "\n\nnotify_DSM.sh update avialable:\n $NOTIFY_DSM_VERSION -> $LatestNotifyRelease\n"
        MessageBody="${MessageBody}${NotifyUpdate}"
    fi
 		trigger_notification
 }
--- a/notify_templates/notify_apprise.sh
+++ b/notify_templates/notify_apprise.sh
@@ -1,30 +1,55 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
 NOTIFY_APPRISE_VERSION="v0.1"
 #
 # Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
 # Modify to fit your setup - if API, set AppriseURL to your Apprise ip/domain.
 send_notification() {
 [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
 UpdToString=$( printf '%s\\n' "${Updates[@]}" )
 FromHost=$(hostname)
-printf "\nSending Apprise notification\n"
+trigger_notification() {
-MessageTitle="$FromHost - updates available."
+   ### Modify to fit your setup:
-# Setting the MessageBody variable here.
+   apprise -vv -t "$MessageTitle" -b "$MessageBody" \
-printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
+      mailto://myemail:mypass@gmail.com \
-
+      mastodons://{token}@{host} \
-# Modify to fit your setup:
+      pbul://o.gn5kj6nfhv736I7jC3cj3QLRiyhgl98b \
-apprise -vv -t "$MessageTitle" -b "$MessageBody" \
+      tgram://{bot_token}/{chat_id}/
   mailto://myemail:mypass@gmail.com \
   mastodons://{token}@{host} \
   pbul://o.gn5kj6nfhv736I7jC3cj3QLRiyhgl98b \
   tgram://{bot_token}/{chat_id}/
 ### If you use the Apprise-API - Comment out the apprise command above.
 ### Uncomment the AppriseURL and the curl-line below:
 # AppriseURL="http://apprise.mydomain.tld:1234/notify/apprise"
 # curl -X POST -F "title=$MessageTitle" -F "body=$MessageBody" -F "tags=all" $AppriseURL
   ### If you use the Apprise-API - Comment out the apprise command above.
   ### Uncomment the AppriseURL and the curl-line below:
   # AppriseURL="http://apprise.mydomain.tld:1234/notify/apprise"
   # curl -X POST -F "title=$MessageTitle" -F "body=$MessageBody" -F "tags=all" $AppriseURL
 }
 send_notification() {
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    printf "\nSending Apprise notification\n"
    MessageTitle="$FromHost - updates available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
    trigger_notification
 }
 ### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
 ### to not send notifications when dockcheck itself has updates.
 dockcheck_notification() {
    printf "\nSending Apprise dockcheck notification\n"
    MessageTitle="$FromHost - New version of dockcheck available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_apprise.sh"
    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_APPRISE_VERSION/s/NOTIFY_APPRISE_VERSION=//p" | tr -d '"')"
    if [[ "$NOTIFY_APPRISE_VERSION" != "$LatestNotifyRelease" ]] ; then
        printf -v NotifyUpdate "\n\nnotify_apprise.sh update avialable:\n $NOTIFY_APPRISE_VERSION -> $LatestNotifyRelease\n"
        MessageBody="${MessageBody}${NotifyUpdate}"
    fi
    trigger_notification
 }
--- a/notify_templates/notify_discord.sh
+++ b/notify_templates/notify_discord.sh
@@ -1,28 +1,43 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
 NOTIFY_DISCORD_VERSION="v0.1"
 #
 # Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
 # Modify to fit your setup - set DiscordWebhookUrl
-send_notification() {
+FromHost=$(hostname)
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    echo "$UpdToString"
    FromHost=$(hostname)
    # 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"
 trigger_notification() {
    # Modify to fit your setup:
    DiscordWebhookUrl="PasteYourFullDiscordWebhookURL"
    MsgBody="{\"username\":\"$FromHost\",\"content\":\"$MessageBody\"}"
    curl -sS -o /dev/null --fail -X POST -H "Content-Type: application/json" -d "$MsgBody" "$DiscordWebhookUrl"
 }
 send_notification() {
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    printf "\nSending Discord notification\n"
    # Setting the MessageBody variable here.
    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
    trigger_notification
 }
 ### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
 ### to not send notifications when dockcheck itself has updates.
 dockcheck_notification() {
    printf "\nSending Discord dockcheck notification\n"
    MessageBody="$FromHost - New version of dockcheck available: \n Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_discord.sh"
    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_DISCORD_VERSION/s/NOTIFY_DISCORD_VERSION=//p" | tr -d '"')"
    if [[ "$NOTIFY_DISCORD_VERSION" != "$LatestNotifyRelease" ]] ; then
        printf -v NotifyUpdate "\n\nnotify_discord.sh update avialable:\n $NOTIFY_DISCORD_VERSION -> $LatestNotifyRelease\n"
        MessageBody="${MessageBody}${NotifyUpdate}"
    fi
    trigger_notification
 }
--- a/notify_templates/notify_generic.sh
+++ b/notify_templates/notify_generic.sh
@@ -1,16 +1,44 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
 NOTIFY_GENERIC_VERSION="v0.1"
 #
 # Copy/rename this file to notify.sh to enable the notification snippet.
 # generic sample, the "Hello World" of notification addons
-send_notification() {
+FromHost=$(hostname)
  [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
  UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-  FromHost=$(hostname)
+trigger_notification()  {
-
+    # Modify to fit your setup:
-  # platform specific notification code would go here
+    printf "\n$MessageTitle\n"
-  printf "\n%bGeneric notification addon:%b" "$c_green" "$c_reset"
+    printf "\n$MessageBody\n"
-  printf "\nThe following docker containers on %s need to be updated:\n" "$FromHost"
+}
-  printf "$UpdToString"
+
 send_notification() {
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    # platform specific notification code would go here
    printf "\n%bGeneric notification addon:%b" "$c_green" "$c_reset"
    MessageTitle="$FromHost - updates available."
    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
    trigger_notification
 }
 ### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
 ### to not send notifications when dockcheck itself has updates.
 dockcheck_notification() {
    printf "\nGeneric dockcheck notification\n"
    MessageTitle="$FromHost - New version of dockcheck available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_generic.sh"
    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_GENERIC_VERSION/s/NOTIFY_GENERIC_VERSION=//p" | tr -d '"')"
    if [[ "$NOTIFY_GENERIC_VERSION" != "$LatestNotifyRelease" ]] ; then
        printf -v NotifyUpdate "\n\nnotify_generic.sh update avialable:\n $NOTIFY_GENERIC_VERSION -> $LatestNotifyRelease\n"
        MessageBody="${MessageBody}${NotifyUpdate}"
    fi
    trigger_notification
 }
--- a/notify_templates/notify_gotify.sh
+++ b/notify_templates/notify_gotify.sh
@@ -1,21 +1,13 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
 NOTIFY_GOTIFY_VERSION="v0.1"
 #
 # Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
 # Modify to fit your setup - set GotifyUrl and GotifyToken.
-send_notification() {
+FromHost=$(hostname)
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    FromHost=$(hostname)
    # platform specific notification code would go here
    printf "\nSending Gotify notification\n"
    # Setting the MessageTitle and MessageBody variable here.
    MessageTitle="${FromHost} - updates available."
    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
 trigger_notification() {
    # Modify to fit your setup:
    GotifyToken="Your Gotify token here"
    GotifyUrl="https://api.gotify/message?token=${GotifyToken}"
@@ -24,6 +16,38 @@ send_notification() {
        -F "title=${MessageTitle}" \
        -F "message=${MessageBody}" \
        -F "priority=5" \
-        -X POST "${GotifyUrl}" &> /dev/null
+        -X POST "${GotifyUrl}" 1> /dev/null
-
+}
 send_notification() {
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    # platform specific notification code would go here
    printf "\nSending Gotify notification\n"
    # Setting the MessageTitle and MessageBody variable here.
    MessageTitle="${FromHost} - updates available."
    printf -v MessageBody "Containers on $FromHost with updates available:\n$UpdToString"
    trigger_notification
 }
 ### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
 ### to not send notifications when dockcheck itself has updates.
 dockcheck_notification() {
    printf "\nSending Gotify dockcheck notification\n"
    MessageTitle="$FromHost - New version of dockcheck available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_gotify.sh"
    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_GOTIFY_VERSION/s/NOTIFY_GOTIFY_VERSION=//p" | tr -d '"')"
    if [[ "$NOTIFY_GOTIFY_VERSION" != "$LatestNotifyRelease" ]] ; then
        printf -v NotifyUpdate "\n\nnotify_gotify.sh update avialable:\n $NOTIFY_GOTIFY_VERSION -> $LatestNotifyRelease\n"
        MessageBody="${MessageBody}${NotifyUpdate}"
    fi
    trigger_notification
 }
--- a/notify_templates/notify_matrix.sh
+++ b/notify_templates/notify_matrix.sh
@@ -1,20 +1,13 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
 NOTIFY_MATRIX_VERSION="v0.1"
 #
 # Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
 # Modify to fit your setup - set MatrixServer, Room_id and AccessToken
-send_notification() {
+FromHost=$(hostname)
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    FromHost=$(hostname)
    # platform specific notification code would go here
    printf "\nSending Matrix notification\n"
    # Setting the MessageBody variable here.
    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
 trigger_notification() {
    # Modify to fit your setup:
    AccessToken="Your Matrix token here"
    Room_id="Enter Room_id here"
@@ -22,7 +15,37 @@ send_notification() {
    MsgBody="{\"msgtype\":\"m.text\",\"body\":\"$MessageBody\"}"
    # URL Example:  https://matrix.org/_matrix/client/r0/rooms/!xxxxxx:example.com/send/m.room.message?access_token=xxxxxxxx
    curl -sS -o /dev/null --fail -X POST "$MatrixServer/_matrix/client/r0/rooms/$Room_id/send/m.room.message?access_token=$AccessToken" -H 'Content-Type: application/json' -d "$MsgBody"
-
+}
 send_notification() {
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    # platform specific notification code would go here
    printf "\nSending Matrix notification\n"
    # Setting the MessageBody variable here.
    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
    trigger_notification
 }
 ### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
 ### to not send notifications when dockcheck itself has updates.
 dockcheck_notification() {
    printf "\nSending Matrix dockcheck notification\n"
    MessageTitle="$FromHost - New version of dockcheck available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_matrix.sh"
    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_MATRIX_VERSION/s/NOTIFY_MATRIX_VERSION=//p" | tr -d '"')"
    if [[ "$NOTIFY_MATRIX_VERSION" != "$LatestNotifyRelease" ]] ; then
        printf -v NotifyUpdate "\n\nnotify_matrix.sh update avialable:\n $NOTIFY_MATRIX_VERSION -> $LatestNotifyRelease\n"
        MessageBody="${MessageBody}${NotifyUpdate}"
    fi
    trigger_notification
 }
--- a/notify_templates/notify_ntfy-sh.sh
+++ b/notify_templates/notify_ntfy-sh.sh
@@ -1,26 +1,50 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
 NOTIFY_NTFYSH_VERSION="v0.1"
 #
 # Copy/rename this file to notify.sh to enable the notification snippet.
 # Setup app and subscription at https://ntfy.sh
 # Use your unique Topic Name in the URL below.
 send_notification() {
 [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
 UpdToString=$( printf '%s\\n' "${Updates[@]}" )
 FromHost=$(hostname)
-printf "\nSending ntfy.sh notification\n"
+trigger_notification() {
-
+    # Modify to fit your setup:
-MessageTitle="$FromHost - updates available."
+    NtfyUrl="ntfy.sh/YourUniqueTopicName"
 # Setting the MessageBody variable here.
 printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
 # Modify to fit your setup:
 NtfyUrl="ntfy.sh/YourUniqueTopicName"
 curl -sS -o /dev/null --show-error --fail \
  -H "Title: $MessageTitle" \
  -d "$MessageBody" \
  $NtfyUrl
    curl -sS -o /dev/null --show-error --fail \
      -H "Title: $MessageTitle" \
      -d "$MessageBody" \
      $NtfyUrl
 }
 send_notification() {
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    printf "\nSending ntfy.sh notification\n"
    MessageTitle="$FromHost - updates available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
    trigger_notification
 }
 ### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
 ### to not send notifications when dockcheck itself has updates.
 dockcheck_notification() {
    printf "\nSending ntfy.sh dockcheck notification\n"
    MessageTitle="$FromHost - New version of dockcheck available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_ntfy-sh.sh"
    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_NTFYSH_VERSION/s/NOTIFY_NTFYSH_VERSION=//p" | tr -d '"')"
    if [[ "$NOTIFY_NTFYSH_VERSION" != "$LatestNotifyRelease" ]] ; then
        printf -v NotifyUpdate "\n\nnotify_ntfy-sh.sh update avialable:\n $NOTIFY_NTFYSH_VERSION -> $LatestNotifyRelease\n"
        MessageBody="${MessageBody}${NotifyUpdate}"
    fi
    trigger_notification
 }
--- a/notify_templates/notify_pushbullet.sh
+++ b/notify_templates/notify_pushbullet.sh
@@ -1,27 +1,51 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
 NOTIFY_PUSHBULLET_VERSION="v0.1"
 #
 # Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
 # Requires jq installed and in PATH.
 # Modify to fit your setup - set Url and Token.
 send_notification() {
 [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
 UpdToString=$( printf '%s\\n' "${Updates[@]}" )
 FromHost=$(hostname)
-# platform specific notification code would go here
+trigger_notification() {
-printf "\nSending pushbullet notification\n"
+    # Modify to fit your setup:
-
+    PushUrl="https://api.pushbullet.com/v2/pushes"
-MessageTitle="$FromHost - updates available."
+    PushToken="Your Pushbullet token here"
 # 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" $PushUrl -d @-
    # Requires jq to process json data
    jq -n --arg title "$MessageTitle" --arg body "$MessageBody" '{body: $body, title: $title, type: "note"}' | curl -sS -o /dev/null --show-error --fail -X POST -H "Access-Token: $PushToken" -H "Content-type: application/json" $PushUrl -d @-
 }
 send_notification() {
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    # platform specific notification code would go here
    printf "\nSending pushbullet notification\n"
    MessageTitle="$FromHost - updates available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
    trigger_notification
 }
 ### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
 ### to not send notifications when dockcheck itself has updates.
 dockcheck_notification() {
    printf "\nSending pushbullet dockcheck notification\n"
    MessageTitle="$FromHost - New version of dockcheck available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_pushbullet.sh"
    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_PUSHBULLET_VERSION/s/NOTIFY_PUSHBULLET_VERSION=//p" | tr -d '"')"
    if [[ "$NOTIFY_PUSHBULLET_VERSION" != "$LatestNotifyRelease" ]] ; then
        printf -v NotifyUpdate "\n\nnotify_pushbullet.sh update avialable:\n $NOTIFY_PUSHBULLET_VERSION -> $LatestNotifyRelease\n"
        MessageBody="${MessageBody}${NotifyUpdate}"
    fi
    trigger_notification
 }
--- a/notify_templates/notify_pushover.sh
+++ b/notify_templates/notify_pushover.sh
@@ -1,22 +1,14 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
 NOTIFY_PUSHOVER_VERSION="v0.1"
 #
 # Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
 # Requires jq installed and in PATH.
 # Modify to fit your setup - set Url and Token.
-send_notification() {
+FromHost=$(hostname)
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    FromHost=$(hostname)
    # platform specific notification code would go here
    printf "\nSending pushover notification\n"
    MessageTitle="$FromHost - updates available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
 trigger_notification() {
    # Modify to fit your setup:
    PushoverUrl="https://api.pushover.net/1/messages.json"
    PushoverUserKey="Your Pushover User Key Here"
@@ -30,3 +22,36 @@ send_notification() {
        -F "message=$MessageBody" \
        $PushoverUrl
 }
 send_notification() {
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    # platform specific notification code would go here
    printf "\nSending pushover notification\n"
    MessageTitle="$FromHost - updates available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
    trigger_notification
 }
 ### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
 ### to not send notifications when dockcheck itself has updates.
 dockcheck_notification() {
    printf "\nSending pushover dockcheck notification\n"
    MessageTitle="$FromHost - New version of dockcheck available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_pushover.sh"
    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_PUSHOVER_VERSION/s/NOTIFY_PUSHOVER_VERSION=//p" | tr -d '"')"
    if [[ "$NOTIFY_PUSHOVER_VERSION" != "$LatestNotifyRelease" ]] ; then
        printf -v NotifyUpdate "\n\nnotify_pushover.sh update avialable:\n $NOTIFY_PUSHOVER_VERSION -> $LatestNotifyRelease\n"
        MessageBody="${MessageBody}${NotifyUpdate}"
    fi
    trigger_notification
 }
--- a/notify_templates/notify_slack.sh
+++ b/notify_templates/notify_slack.sh
@@ -0,0 +1,52 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
 NOTIFY_SLACK_VERSION="v0.1"
 #
 # Copy/rename this file to notify.sh in the same directory as dockcheck.sh to enable the notification snippet.
 # Setu app and token at https://api.slack.com/tutorials/tracks/posting-messages-with-curl
 # Add your AccessToken and ChannelID below
 FromHost=$(hostname)
 trigger_notification() {
    # Modify to fit your setup:
    AccessToken="xoxb-not-a-real-token-this-will-not-work"
    ChannelID="C123456"
    SlackUrl="https://slack.com/api/chat.postMessage"
    curl -sS -o /dev/null --show-error --fail \
      -d "text=$MessageBody" -d "channel=$ChannelID" \
      -H "Authorization: Bearer $AccessToken" \
      -X POST $SlackUrl
 }
 send_notification() {
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    printf "\nSending Slack notification\n"
    MessageTitle="$FromHost - updates available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
    trigger_notification
 }
 ### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
 ### to not send notifications when dockcheck itself has updates.
 dockcheck_notification() {
    printf "\nSending Slack dockcheck notification\n"
    MessageTitle="$FromHost - New version of dockcheck available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_slack.sh"
    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_SLACK_VERSION/s/NOTIFY_SLACK_VERSION=//p" | tr -d '"')"
    if [[ "$NOTIFY_SLACK_VERSION" != "$LatestNotifyRelease" ]] ; then
        printf -v NotifyUpdate "\n\nnotify_slack.sh update avialable:\n $NOTIFY_SLACK_VERSION -> $LatestNotifyRelease\n"
        MessageBody="${MessageBody}${NotifyUpdate}"
    fi
    trigger_notification
 }
--- a/notify_templates/notify_smtp.sh
+++ b/notify_templates/notify_smtp.sh
@@ -1,4 +1,5 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
 NOTIFY_SMTP_VERSION="v0.1"
 # INFO: ssmtp is depcerated - consider to use msmtp instead.
 #
 # Copy/rename this file to notify.sh to enable the notification snipppet.
@@ -16,25 +17,19 @@ 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_notification() {
 # 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"
 $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
@@ -42,3 +37,35 @@ $MessageBody
 __EOF
 }
 send_notification() {
 		[ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
 		UpdToString=$( printf '%s\\n' "${Updates[@]}" )
 		printf "\nSending email notification.\n"
 		MessageTitle="Updates available on"
 		# Setting the MessageBody variable here.
 		printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n\n$UpdToString"
 		trigger_notification
 }
 ### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
 ### to not send notifications when dockcheck itself has updates.
 dockcheck_notification() {
 		printf "\nSending email dockcheck notification.\n"
 		MessageTitle="New version of dockcheck available on"
 		# Setting the MessageBody variable here.
 		printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_smtp.sh"
    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_SMTP_VERSION/s/NOTIFY_SMTP_VERSION=//p" | tr -d '"')"
    if [[ "$NOTIFY_SMTP_VERSION" != "$LatestNotifyRelease" ]] ; then
        printf -v NotifyUpdate "\n\nnotify_smtp.sh update avialable:\n $NOTIFY_SMTP_VERSION -> $LatestNotifyRelease\n"
        MessageBody="${MessageBody}${NotifyUpdate}"
    fi
 		trigger_notification
 }
--- a/notify_templates/notify_telegram.sh
+++ b/notify_templates/notify_telegram.sh
@@ -1,20 +1,13 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
 NOTIFY_TELEGRAM_VERSION="v0.1"
 #
 # Copy/rename this file to notify.sh to enable the notification snippet.
 # Required receiving services must already be set up.
 # Modify to fit your setup - set TelegramChatId and TelegramToken.
-send_notification() {
+FromHost=$(hostname)
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    FromHost=$(hostname)
    # platform specific notification code would go here
    printf "\nSending Telegram notification\n"
    # Setting the MessageBody variable here.
    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
 trigger_notification() {
    # Modify to fit your setup:
    TelegramToken="Your Telegram token here"
    TelegramChatId="Your Telegram ChatId here"
@@ -23,5 +16,36 @@ send_notification() {
    TelegramData="{\"chat_id\":\"$TelegramChatId\",\"text\":\"$MessageBody\",\"message_thread_id\":\"$TelegramTopicID\",\"disable_notification\": false}"
    curl -sS -o /dev/null --fail -X POST "$TelegramUrl/sendMessage" -H 'Content-Type: application/json' -d "$TelegramData"
-
+}
 send_notification() {
    [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
    UpdToString=$( printf '%s\\n' "${Updates[@]}" )
    # platform specific notification code would go here
    printf "\nSending Telegram notification\n"
    # Setting the MessageBody variable here.
    MessageBody="🐋 Containers on $FromHost with updates available: \n$UpdToString"
    trigger_notification
 }
 ### Rename (eg. disabled_dockcheck_notification), remove or comment out the following function
 ### to not send notifications when dockcheck itself has updates.
 dockcheck_notification() {
    printf "\nSending Telegram dockcheck notification\n"
    MessageTitle="$FromHost - New version of dockcheck available."
    # Setting the MessageBody variable here.
    printf -v MessageBody "$FromHost - New version of dockcheck available.\n\nInstalled version: $1 \nLatest version: $2 \n\nChangenotes: $3"
    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_telegram.sh"
    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_TELEGRAM_VERSION/s/NOTIFY_TELEGRAM_VERSION=//p" | tr -d '"')"
    if [[ "$NOTIFY_TELEGRAM_VERSION" != "$LatestNotifyRelease" ]] ; then
        printf -v NotifyUpdate "\n\nnotify_telegram.sh update avialable:\n $NOTIFY_TELEGRAM_VERSION -> $LatestNotifyRelease\n"
        MessageBody="${MessageBody}${NotifyUpdate}"
    fi
    trigger_notification
 }
Author	SHA1	Message	Date
mag37	8dd1bba75b	Clean&refactor (#148 ) * cleaning spaces and consistent formatting * removed more subshells * progress bar cleanup * moved uservars to a .config file * rewritten options from yes/no to true/false * initialized default variables * added bash options: -euo pipefail, shopt -s nullglob and failglob * quoting variables, cleaning syntax, logic and order * unquoted some variables due to breakage * added exit on pull-fail * added new sponsor * added Slack template	2025-03-30 13:31:34 +02:00
mag37	b5c03a2caa	Merge pull request #139 from devzwf/main Update README.md	2025-03-18 05:38:59 +01:00
ZwF	9c4c79b885	Update README.md Add the -x option to the readme...	2025-03-17 22:20:06 -04:00
mag37	d9fe113225	updated gif	2025-03-17 08:39:09 +01:00
mag37	0a9d60f4df	Merge pull request #137 from mag37/notify_versioning notify-template versioning	2025-03-16 20:56:11 +01:00
mag37	c57923f152	versionbump	2025-03-16 20:54:34 +01:00
mag37	fd1769c30f	added versions + version checks to all templates	2025-03-16 20:47:46 +01:00
mag37	965f2dd825	first change to DSM	2025-03-14 20:36:07 +01:00
mag37	48057dfc66	notify and xargs info added Added info about notifying on new dockcheck updates and a info block about async/xargs.	2025-03-09 10:19:22 +01:00
mag37	98e80854be	Merge pull request #135 from mag37/dockcheck_upd_notify rewrite of notify-templates	2025-03-09 10:00:57 +01:00
mag37	dcbdb5becd	minor fixes	2025-03-09 09:57:45 +01:00
mag37	8fc4f41c49	version bump and change notes	2025-03-07 21:11:01 +01:00
mag37	9b0b6137a3	fixed typos	2025-03-07 21:05:58 +01:00
mag37	7ed4286fe7	merged updates from main	2025-03-07 20:47:43 +01:00
mag37	bf1e78d2ff	hotfix changelog	2025-02-26 22:04:05 +01:00
mag37	9fa398e553	Merge pull request #132 from mag37/xargs_hotfix Made MaxAsync=1 the default - edit to change. Added -x option to pass a MaxAsync value on runtime. Made it possible to disable xargs -P-flag by setting MaxAsync=0 or passing -x 0 option.	2025-02-26 21:42:58 +01:00
mag37	9ef2ea7135	versionbump + changenotes	2025-02-26 21:39:33 +01:00
mag37	8c3b899332	async hotfix, defaults to 1 subprocess, added -x option to set custom async value	2025-02-26 21:23:15 +01:00
mag37	8110cd8892	Update README.md	2025-02-25 21:30:41 +01:00
mag37	502a167919	Update README.md	2025-02-25 21:30:20 +01:00
mag37	61f90893ef	async version bump	2025-02-24 22:12:11 +01:00
mag37	229cde0efb	Updated README.md Added changelog. Added info about Docker Hub pull limit.	2025-02-24 22:03:20 +01:00
mag37	0c6674ac8e	Merge pull request #128 from Thaurin/parallel_check Add async checking for updates for improved performance	2025-02-24 21:59:30 +01:00
mag37	3e079e2ec5	Update dockcheck.sh Added MaxAsync variable. Added POSIX xargs check. Rewrote Excludes.	2025-02-24 21:49:19 +01:00
Thaurin	b2d67c9f52	Removed experimental -z flag and old version check code	2025-02-21 17:57:09 +01:00
Thaurin	3aeee837f9	Print entire line on error	2025-02-21 17:54:19 +01:00
Thaurin	408a8b14dd	Fix -d parameter not working anymore	2025-02-20 18:48:55 +01:00
Thaurin	a2868ea505	Add error message; increase number of subprocesses	2025-02-20 18:48:55 +01:00
Thaurin	62a3d10b4f	Add async checking for updates for improved performance	2025-02-20 18:48:55 +01:00
mag37	210c076968	Merge pull request #130 from mag37/osx_support Some osx / bsd compatibility changes. Rewritten the dependency (jq + regctl) install method. Many thanks to @pshannon-git for testing!	2025-02-19 20:36:42 +01:00
mag37	65e875e860	fixed typo	2025-02-19 20:26:54 +01:00
mag37	3655f5ae8a	version bump	2025-02-19 13:36:30 +01:00
mag37	78a7e1137f	OSX appname return	2025-02-18 10:07:21 +01:00
mag37	76e6a5c38b	Update dockcheck.sh typo	2025-02-18 08:15:52 +01:00
mag37	41029f628d	Update dockcheck.sh indentation error.	2025-02-18 07:59:11 +01:00
mag37	b918844336	reformatting	2025-02-17 22:38:14 +01:00
mag37	27896c18ba	squashed multiple dependency downloaders to one function	2025-02-17 22:23:10 +01:00
mag37	06ea7fff6d	newline and rephrasing	2025-02-15 13:35:47 +01:00
mag37	e68adb34d0	added info about macos osx	2025-02-15 13:23:42 +01:00
mag37	6bc896b193	typo	2025-02-14 13:01:23 +01:00
mag37	6cba140522	too tired.. forgot fi's	2025-02-13 22:21:53 +01:00
mag37	73050abf10	rewrote regctl download	2025-02-13 22:18:08 +01:00
mag37	d4d89c305c	osx/bsd compatibility changes	2025-02-13 21:39:29 +01:00
mag37	c436def448	typo	2025-02-13 21:34:03 +01:00
mag37	96ebe079a4	removed 'not source' message as its optional	2025-02-13 21:28:21 +01:00
mag37	111cb955b1	finalizing new notification structure	2025-02-10 19:46:23 +01:00
mag37	71967277aa	new notification structure	2025-02-09 22:01:08 +01:00
mag37	1548b03a9e	added else with inclusion of new function, rewrote 2 templates for testing	2025-02-07 20:47:01 +01:00
mag37	bc6a3529c7	Update README.md	2025-02-07 19:34:24 +01:00
mag37	01b9b33751	Merge pull request #124 from mag37/prometheus_addon Prometheus addon	2025-02-07 19:28:43 +01:00
mag37	9ed2a0bad0	finalized prometheus addon	2025-02-07 19:27:14 +01:00
mag37	43307350ca	formatting of header	2025-01-31 23:58:05 +01:00
mag37	b3600f26ac	restructure, moved to addon-subdir and split code to sourced snippet	2025-01-31 23:52:10 +01:00
mag37	79def47754	Merge pull request #121 from tdralle/main Added an export for node_exporter's text file collector to provide metrics to Prometheus	2025-01-31 23:37:24 +01:00
mag37	e6ff634394	versionbump	2025-01-28 21:55:35 +01:00
mag37	6444e18a4f	Merge pull request #122 from mag37/5.3_fixes local image check changed, Gotify-template fixed	2025-01-28 21:53:50 +01:00
mag37	14872b0471	local image check changed, Gotify-template fixed, version bump	2025-01-28 21:50:02 +01:00
mag37	07ad241e9f	removed whale icon and changed redirection to still show errors	2025-01-28 21:08:20 +01:00
Thorsten Dralle	58d53d3aaf	Added a node collector to export statistics to prometheus	2025-01-27 20:57:19 +01:00
mag37	15ce226a0a	changed local image check to reference ID instead of image-name	2025-01-22 16:07:50 +01:00
mag37	cce5438aca	Update notify_DSM.sh Ensures DSM GUI refreshes its update-check. TY @yoyoma2 for the fix.	2024-12-01 20:51:51 +01:00