main_ci.yml

name: CI to Docker Hub 

on:
  push:
    branches: [ master ]

jobs:

  build:
    runs-on: ubuntu-latest
    container: docker/dev-environments-go
    steps:
      - 
        name: Checkout
        uses: actions/checkout@v2
      -       
        name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v1
      -     
        name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-
      - 
        uses: docker/login-action@v1 
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}
      -
        name: Build and push
        id: docker_build
        uses: docker/build-push-action@v2
        with:
          context: ./ 
          file: ./Dockerfile
          builder: ${{ steps.buildx.outputs.name }}
          push: true
          tags: bengotch/simplewhale:latest
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache
      -
        name: Image digest
        run: echo ${{ steps.docker_build.outputs.digest }}