build.yaml

name: build and push images
on:
  push:
    paths-ignore:
    - 'README.md'
    branches:
      - main
      - master
    tags:
      - 'v*.*.*'
jobs:
  docker-build-and-publish:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@main
      - name: Set env
        id: env
        env:
          IMAGE: ${{ github.repository }}
        run: |
          image=`echo -n "${IMAGE}" | tr 'A-Z' 'a-z'`
          echo "::set-output name=IMAGE::$(echo $image)"
      - name: Login to registry
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v3
        with:
          images: ghcr.io/${{ steps.env.outputs.IMAGE }}
          flavor: |
            latest=true
      - name: Build and push
        id: docker_build
        uses: docker/build-push-action@v2
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}