build.yaml

name: Build

on: push

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - run: echo $GITHUB_REF
    - uses: actions/checkout@v2

    - name: Docker meta
      id: docker_meta
      uses: docker/metadata-action@v3
      with:
        images:
          ghcr.io/${{ github.repository }}

    - name: Set up QEMU
      uses: docker/setup-qemu-action@v1

    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v1

    - name: Login to Github container registry
      uses: docker/login-action@v1
      with:
        registry: ghcr.io
        username: ${{ github.repository_owner }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Build and push docker images
      id: docker_build
      uses: docker/build-push-action@v2
      with:
        context: .
        push: true
        tags:  ${{ steps.docker_meta.outputs.tags }}
        labels: ${{ steps.docker_meta.outputs.labels }}
        cache-from: type=gha
        cache-to: type=gha,mode=max

    - name: Image digest
      run: echo ${{ steps.docker_build.outputs.digest }}