tried to fix #15 again

.gitea/workflows/release-docker.yaml

@@ -6,33 +6,30 @@ on:
 
 jobs:
   build-and-push:
-    runs-on: docker-builder
-
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      - name: Enable QEMU for multi-arch builds
-        run: |
-          docker run --privileged --rm tonistiigi/binfmt --install all
+      - name: Set up QEMU
+        uses: actions/setup-qemu-action@v3
 
-      - name: Create and use Docker Buildx builder
-        run: |
-          docker buildx create --name miauinv-builder --use || docker buildx use miauinv-builder
-          docker buildx inspect --bootstrap
+      - name: Set up Docker Buildx
+        uses: actions/setup-buildx-action@v3
 
       - name: Log in to Gitea Container Registry
         run: |
-          echo "${{ secrets.GITHUB_TOKEN }}" | docker login git.miaurizius.de \
-            --username "${{ gitea.actor }}" \
+          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login git.miaurizius.de \
+            --username "${{ secrets.REGISTRY_USER }}" \
             --password-stdin
 
-      - name: Build and push multi-arch Docker image
-        run: |
-          docker buildx build \
-            --platform linux/amd64,linux/arm64 \
-            --file ./Dockerfile \
-            --tag git.miaurizius.de/${{ gitea.repository }}:latest \
-            --tag git.miaurizius.de/${{ gitea.repository }}:${{ gitea.event.release.tag_name }} \
-            --push \
-            .
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: |
+            git.miaurizius.de/${{ gitea.repository }}:latest
+            git.miaurizius.de/${{ gitea.repository }}:${{ gitea.event.release.tag_name }}