Add correct registry tag

.gitea/workflows/build.yaml

@@ -8,6 +8,18 @@ jobs:
     runs-on: ubuntu-latest
     container: catthehacker/ubuntu:act-latest
     steps:
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          # list of Docker images to use as base name for tags
+          images: |
+            registry.zhbase.ch/zhbase/web
+          # generate Docker tags based on the following events/attributes
+          tags: |
+            type=sha
+            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}
+
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with:
@@ -22,4 +34,5 @@ jobs:
         uses: docker/build-push-action@v6
         with:
           push: true
-          tags: zhbase/web:latest
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}