tying to enforce build order

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

.gitea/workflows/docker.yaml

@@ -11,6 +11,10 @@ jobs:
 
       - 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