chore: add docker job

.github/workflows/release.yml

@@ -34,3 +34,30 @@ jobs:
           args: release --rm-dist
         env:
           GITHUB_TOKEN: ${{ secrets.PERSONAL_GITHUB_TOKEN }}
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check Out Repo
+        uses: actions/checkout@v2
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          context: ./
+          file: ./Dockerfile
+          push: true
+          tags: ${{ secrets.DOCKER_HUB_USERNAME }}/contentfulproxy:latest
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}