Upstream patches and additional patching (#2)

* 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>

extras/errorCheck.sh

@@ -1,37 +1,55 @@
 #!/usr/bin/env bash
+# Usage: ./script.sh <SearchName>
+
 SearchName="$1"
-for i in $(podman ps --filter "name=$SearchName" --format '{{.Names}}') ; do
-  echo "------------ $i ------------"
-  ContLabels=$(podman inspect "$i" --format '{{json .Config.Labels}}')
-  ContImage=$(podman inspect "$i" --format='{{.ImageName}}')
+
+# Iterate over containers whose name contains the search term.
+podman ps --filter "name=$SearchName" --format '{{.Names}}' | while read -r container; do
+  echo "------------ $container ------------"
+  
+  # Retrieve container labels and image name.
+  ContLabels=$(podman inspect "$container" --format '{{json .Config.Labels}}')
+  ContImage=$(podman inspect "$container" --format '{{.ImageName}}')
+  
+  # Extract values from labels; if not set, default to an empty string.
   ContPath=$(jq -r '."com.docker.compose.project.working_dir"' <<< "$ContLabels")
   [ "$ContPath" == "null" ] && ContPath=""
+  
   ContConfigFile=$(jq -r '."com.docker.compose.project.config_files"' <<< "$ContLabels")
   [ "$ContConfigFile" == "null" ] && ContConfigFile=""
+  
   ContName=$(jq -r '."com.docker.compose.service"' <<< "$ContLabels")
   [ "$ContName" == "null" ] && ContName=""
+  
   ContEnv=$(jq -r '."com.docker.compose.project.environment_file"' <<< "$ContLabels")
   [ "$ContEnv" == "null" ] && ContEnv=""
+  
   ContUpdateLabel=$(jq -r '."sudo-kraken.podcheck.update"' <<< "$ContLabels")
   [ "$ContUpdateLabel" == "null" ] && ContUpdateLabel=""
+  
   ContRestartStack=$(jq -r '."sudo-kraken.podcheck.restart-stack"' <<< "$ContLabels")
   [ "$ContRestartStack" == "null" ] && ContRestartStack=""
-
-  if [[ $ContConfigFile = '/'* ]] ; then
+  
+  # Determine the compose file location.
+  if [[ $ContConfigFile = '/'* ]]; then
     ComposeFile="$ContConfigFile"
   else
     ComposeFile="$ContPath/$ContConfigFile"
   fi
-
+  
+  # Output the extracted details.
   echo -e "Service name:\t\t$ContName"
   echo -e "Project working dir:\t$ContPath"
   echo -e "Compose files:\t\t$ComposeFile"
   echo -e "Environment files:\t$ContEnv"
   echo -e "Container image:\t$ContImage"
-  echo -e "Update label:\t$ContUpdateLabel"
+  echo -e "Update label:\t\t$ContUpdateLabel"
   echo -e "Restart Stack label:\t$ContRestartStack"
   echo
   echo "Mounts:"
-  podman inspect  -f '{{ range .Mounts }}{{ .Source }}:{{ .Destination }}{{ printf "\n" }}{{ end }}' "$i"
+  
+  # Display container mount points.
+  podman inspect -f '{{ range .Mounts }}{{ .Source }}:{{ .Destination }}{{ "\n" }}{{ end }}' "$container"
   echo
 done
+