add docker login

.gitea/workflows/docker-build.yaml

@@ -6,9 +6,13 @@ jobs:
   build-docker-image:
     runs-on: ubuntu-latest
     steps:
-      - name: ls
-        run: ls
       - name: Checkout repository
         uses: actions/checkout@v3
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ secrets.REGISTRY }}
+          username: ${{ secrets.USER }}
+          password: ${{ secrets.DOCKER_TOKEN }}
       - name: use build script
         run: ./dockerbuild.sh