Update renovate action to update only current app

.github/workflows/renovate-app-version.sh

@@ -1,8 +1,10 @@
 #!/bin/bash
 # This script copies the version from docker-compose.yml to config.json.
 
-# find all docker-compose files
-docker_compose_files=$(find apps -name docker-compose.yml)
+app_name=$1
+
+# find all docker-compose files under apps/$app_name (there should be only one)
+docker_compose_files=$(find apps/$app_name -name docker-compose.yml)
 
 for docker_compose_file in $docker_compose_files
 do

.github/workflows/renovate-app-version.yml

@@ -16,9 +16,22 @@ jobs:
           git config --local user.email "githubaction@githubaction.com"
           git config --local user.name "github-action update-app-version"
 
-      - name: Update app version
+      - name: Get list of updated files by the last commit seperated by space
+        id: updated-files
         run: |
-          ./.github/workflows/renovate-app-version.sh
+          echo ${{github.sha}}
+          echo "::set-output name=files::$(git diff-tree --no-commit-id --name-only -r ${{ github.sha }} | tr '\n' ' ')"
+
+      - name: Run renovate-app-version.sh on updated files
+        run: |
+          IFS=' ' read -ra files <<< "${{ steps.updated-files.outputs.files }}"
+
+          for file in "${files[@]}"; do
+            if [[ $file == *"docker-compose.yml"* ]]; then
+              app_name=$(echo $file | cut -d'/' -f 2)
+              ./.github/workflows/renovate-app-version.sh $app_name
+            fi
+          done
       
       - name: Commit & Push Changes
         run: |