try gitea actions for dart server

Signed-off-by: Peter Siegmund <developer@mars3142.org>

.gitea/workflows/docker.yml

@@ -0,0 +1,28 @@
+name: Build and Push Multi-Arch Docker Image
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to Gitea Registry
+        run: echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login ${{ secrets.DOMAIN }} -u ${{ secrets.REGISTRY_USER }} --password-stdin
+
+      - name: Build and Push Multi-Arch Image
+        working-directory: ./server/cinema
+        run: |
+          docker buildx build \
+            --platform linux/amd64,linux/arm64 \
+            --network=host \
+            -t ${{ secrets.DOMAIN }}/${{ secrets.OWNER }}/${{ secrets.REPO }}/server:latest \
+            --push .