ci: push docker image to Docker Hub

.github/workflows/release_docker.yml

@@ -0,0 +1,35 @@
+name: release_docker
+
+on:
+  push:
+    branches:
+      - 'main'
+    tags:
+      - '*'
+
+jobs:
+  build-docker-image:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        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
+        uses: docker/setup-buildx-action@v1
+
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./frontend/scripts/docker-buildfiles/Dockerfile
+          builder: ${{ steps.buildx.outputs.name }}
+          push: true
+          tags: ${{ secrets.DOCKER_HUB_USERNAME }}/appflowy:${{ github.ref_name }}
+          cache-from: type=registry,ref=${{ secrets.DOCKER_HUB_USERNAME }}/appflawy:buildcache
+          cache-to: type=registry,ref=${{ secrets.DOCKER_HUB_USERNAME }}/appflawy:buildcache,mode=max