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Upstream patches and additional patching (#2)

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* Ensures DSM GUI refreshes its updates

* Removed whale icon and changed verbosity

* Added addon for Prometheus+node_exporter

* Changed local image check to check on image ID rather than name

* Update podcheck.sh

changed docker->podman, typo

* - **v0.6.0**:
    - **Grafana & Prometheus Integration:**
      - Added a detailed Prometheus metrics exporter that now reports not only the number of containers with updates, no-updates, and errors, but also the total number of containers checked, the duration of the update check, and the epoch timestamp of the last check.
      - Enhanced documentation with instructions on integrating these metrics with Grafana for visual monitoring.
    - **Improved Error Handling & Code Refactoring:**
      - Introduced `set -euo pipefail` and local variable scoping within functions to improve reliability and prevent unexpected behaviour.
      - Standardised container name handling and refined the Quadlet detection logic.
    - **Self-Update Enhancements:**
      - Updated the self-update mechanism to support both Git-based and HTTP-based updates, with an automatic restart that preserves the original arguments.
    - **Miscellaneous Improvements:**
      - Enhanced dependency installer to support both package manager and static binary installations for `jq` and `regctl`.
      - General code refactoring across the project for better readability and maintainability.

* Update podcheck.sh

* increment version

* Update Quadlet detection logic 

Update Quadlet detection logic to support flexible service naming

- Modified the quadlet update block to first try an exact match for "$i.service".
- If no exact match is found, build a regex pattern from the container name (allowing underscores and hyphens interchangeably) and search user service units.
- When multiple candidate units are found, the script attempts to choose the one that exactly matches (ignoring case) or defaults to the first candidate.
- This update allows containers like "containera" to match service units named "container_a.service" and supports scenarios with multiple counterparts (e.g., matrix-a, matrix-b, matrix_db).

* search name fix

* fixes to arg parsing

* Logic overhaul, verbose output and better syntax

* Added support for prometheus

---------

Co-authored-by: mag37 <robin.ivehult@gmail.com>
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21
README.md
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@ -14,6 +14,18 @@
___
## :bell: Changelog
- **v0.6.0**:
- **Grafana & Prometheus Integration:**
- Added a detailed Prometheus metrics exporter that now reports not only the number of containers with updates, no-updates, and errors, but also the total number of containers checked, the duration of the update check, and the epoch timestamp of the last check.
- Enhanced documentation with instructions on integrating these metrics with Grafana for visual monitoring.
- **Improved Error Handling & Code Refactoring:**
- Introduced `set -euo pipefail` and local variable scoping within functions to improve reliability and prevent unexpected behaviour.
- Standardised container name handling and refined the Quadlet detection logic.
- **Self-Update Enhancements:**
- Updated the self-update mechanism to support both Git-based and HTTP-based updates, with an automatic restart that preserves the original arguments.
- **Miscellaneous Improvements:**
- Enhanced dependency installer to support both package manager and static binary installations for `jq` and `regctl`.
- General code refactoring across the project for better readability and maintainability.
- **v0.5.7**: Rewrite of dependency downloads, now jq can be installed with package manager or static binary.
- **v0.5.6**: Directly checking for systemd units matching container names.
- Improved Quadlet detection by checking for systemd units named after the container.
@ -133,6 +145,15 @@ it-tools -> https://github.com/CorentinTh/it-tools/releases
```
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.
## :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_prom.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, you can add labels to your containers to control how Podcheck handles them. Currently, these are the usable labels: