Merge pull request #4 from robinstraub/ci/add-docker-build-action

ci: add docker build action

.github/workflows/docker.yml

@@ -0,0 +1,34 @@
+name: Build and Push Docker Image
+
+on:
+  release:
+    types:
+      - created
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: true
+          file: infra/docker/Dockerfile
+          tags: >
+            ghcr.io/${{ github.repository }}:latest,
+            ghcr.io/${{github.repository }}:${{ github.event.release.tag_name }}