fix: only push latest tag, remove sha revision

.gitea/workflows/build.yml

@@ -12,17 +12,10 @@ jobs:
       - name: Login Gitea Container Registry
         run: echo "${{ secrets.ACTION_BOT }}" | docker login gitea.lokcal.de -u loki --password-stdin
 
-      - name: Build and tag
+      - name: Build and push latest
         run: |
           IMAGE="gitea.lokcal.de/loki/update-planer"
           docker build \
             --label "org.opencontainers.image.source=https://gitea.lokcal.de/loki/UpdatePlaner" \
-            --label "org.opencontainers.image.revision=${{ gitea.sha }}" \
-            -t "$IMAGE:${{ gitea.sha }}" \
             -t "$IMAGE:latest" .
-
-      - name: Push
-        run: |
-          IMAGE="gitea.lokcal.de/loki/update-planer"
-          docker push "$IMAGE:${{ gitea.sha }}"
           docker push "$IMAGE:latest"