name: Docker build image
on: [push]
jobs:
    docker:
        runs-on: ubuntu-latest
        steps:
            - name: Checkout
              uses: actions/checkout@v2
            - name: Set up QEMU
              uses: docker/setup-qemu-action@v1
            - name: Setup Docker Buildx
              uses: docker/setup-buildx-action@v1
            - name: Login to DockerHub
              uses: docker/login-action@v1
              with:
                  username: ${{ secrets.DOCKERHUB_USERNAME }}
                  password: ${{ secrets.DOCKERHUB_TOKEN }}
            - name: Build and push
              id: docker_build
              uses: docker/build-push-action@v2
              with:
                  push: true
                  tags: ${{ secrets.DOCKERHUB_USERNAME }}/python-helloworld:latest
                  platforms: linux/amd64,linux/arm64
            - name: Image digest
              run: echo ${{ steps.docker_build.outputs.digest }}