fix: simplify image detection with for loop and add debug output

.gitea/workflows/build-images.yml

@@ -32,23 +32,35 @@ jobs:
         run: |
           echo "Event: ${{ gitea.event_name }}"
           
+          # Debug: show images directory
+          echo "Content of images/:"
+          ls -la images/ || echo "images/ not found"
+          
           if [ "${{ gitea.event_name }}" = "workflow_dispatch" ]; then
             echo "Manual trigger - building all images"
-            # List all directories with Dockerfile
-            IMAGES=$(find images -mindepth 1 -maxdepth 1 -type d -exec test -f {}/Dockerfile \; -print | xargs -n1 basename | tr '\n' ',' | sed 's/,$//')
+            # Simple loop to find images with Dockerfile
+            IMAGES=""
+            for dir in images/*/; do
+              if [ -f "${dir}Dockerfile" ]; then
+                name=$(basename "$dir")
+                echo "Found image: $name"
+                IMAGES="${IMAGES}${name},"
+              fi
+            done
+            IMAGES=${IMAGES%,}  # Remove trailing comma
           else
             echo "Push event - detecting changes"
             IMAGES=$(git diff --name-only HEAD~1 HEAD -- images/ 2>/dev/null | cut -d'/' -f2 | sort -u | grep -v '^$' | tr '\n' ',' | sed 's/,$//')
           fi
           
-          echo "Detected images: $IMAGES"
+          echo "Detected images: >$IMAGES<"
           
           if [ -z "$IMAGES" ]; then
             echo "has_changes=false" >> $GITHUB_OUTPUT
             echo "image_list=[]" >> $GITHUB_OUTPUT
           else
-            # Convert to JSON array
-            JSON=$(echo "$IMAGES" | tr ',' '\n' | sed 's/.*/"&"/' | tr '\n' ',' | sed 's/,$//' | sed 's/^/[/' | sed 's/$/]/')
+            # Convert to JSON array - simple approach
+            JSON="[$(echo "$IMAGES" | sed 's/,/","/g' | sed 's/^/"/' | sed 's/$/"/' )]"
             echo "JSON: $JSON"
             echo "has_changes=true" >> $GITHUB_OUTPUT
             echo "image_list=$JSON" >> $GITHUB_OUTPUT