trying action for build

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

.gitea/workflows/docker.yaml

@@ -9,12 +9,10 @@ jobs:
       - name: Clone Repository
         uses: actions/checkout@v4
 
-      - name: Build docker image
-        run: |
-          ls -al
-          mv docker/Dockerfile .
-          echo '======='
-          cat Dockerfile
-          echo '======='
-          docker build --no-cache -t umbrella .
-          docker tag umbrella ${{ secrets.REGISTRY_PATH }}/umbrella:latest
+      - name: Move Dockerfile
+        run: mv docker/Dockerfile .
+
+      - name: Build
+        uses: docker/build-push-action@v6
+        with:
+          push: false