Use official CI/CD of GitHub docker action

https://docs.docker.com/language/nodejs/configure-ci-cd/

.github/workflows/docker-image.yml

@@ -9,8 +9,30 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+
     steps:
-      - name: Checkout before build
-        uses: actions/checkout@v3
-      - name: Build the Docker image
-        run: docker build . --file Dockerfile --tag cook:$(date +%s)
+
+      - name: Check Out Repo
+        uses: actions/checkout@main
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@master
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@master
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@master
+        with:
+          context: ./
+          file: ./Dockerfile
+          push: true
+          tags: ${{ secrets.DOCKER_HUB_USERNAME }}/simplewhale:latest
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}