Test changed-files action

.forgejo/workflows/build-image.yml

@@ -19,8 +19,16 @@ jobs:
         with:
           submodules: recursive
 
-      - name: Confirm Podman works
+      - name: Detect Directory Changes
-        run: sudo -u podman podman run --rm hello-world
+        id: changed-dirs
+        uses: https://github.com/tj-actions/changed-files@v42
+        with:
+          dir_names: 'true'
 
       - name: Build & Push
-        run: sudo -u podman ./build-image.sh element-web
+        env:
+          ALL_CHANGED_DIRS: ${{ steps.changed-dirs.outputs.all_changed_files }}
+        run: |
+          for file in ${ALL_CHANGED_DIRS}; do
+            echo "sudo -u podman ./build-image.sh ${file}"
+          done