feat: add Gitea Actions workflow for building and publishing Docker image to registry

.gitea/workflows/publish.yaml

@@ -0,0 +1,48 @@
+name: Build and publish Docker image
+
+on:
+  release:
+    types: [published]
+
+env:
+  REGISTRY: gitea.kanawave.net
+  REGISTRY_USERNAME: sebastas
+  IMAGE_NAME: ${{ gitea.repository }}
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    # Permissions are not yet supported in Gitea Actions -> https://github.com/go-gitea/gitea/issues/23642#issuecomment-2119876692
+    # permissions:
+    #   contents: read
+    #   packages: write
+    #   attestations: write
+    #   id-token: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Login to registry
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ env.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: Extract metadata (tags, labels)
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Build and push
+        id: push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          # file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}