container.yml

name: Container

on:
  push:

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

jobs:
  container:
    runs-on: ubuntu-20.04
    strategy:
      matrix:
        platform: [linux/amd64]
    permissions:
      contents: read
      packages: write

    steps:
      - uses: actions/checkout@v2.3.5

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

      - name: Log in to the Container registry
        uses: docker/login-action@v1
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata for Docker
        uses: docker/metadata-action@v3
        id: meta
        with:
          tags: |
            type=sha,format=long
            type=ref,prefix=pr-,event=pr
            type=semver,pattern={{version}},event=tag
            type=semver,pattern={{major}}.{{minor}},event=tag
            type=semver,pattern={{major}},event=tag
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Build and push Docker image (${{ matrix.platform }})
        uses: docker/build-push-action@v2
        with:
          file: amd64.Dockerfile
          builder: ${{ steps.buildx.outputs.name }}
          push: true
          platforms: ${{ matrix.platform }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha, scope=${{ github.workflow }}
          cache-to: type=gha, scope=${{ github.workflow }}