docker-build-push/.github/workflows/example.yml

# This workflow is provided just as an usage example and not for repo testing/verification
# See https://github.com/docker/build-push-action#complete-workflow
name: example

on:
  schedule:
    - cron: '0 10 * * 0' # everyday sunday at 10am
  push:
    branches:
      - '**'
    tags:
      - 'v*.*.*'
  pull_request:

jobs:
  docker:
    runs-on: ubuntu-latest
    services:
      registry:
        image: registry:2
        ports:
          - 5000:5000
    steps:
      -
        name: Checkout
        uses: actions/checkout@v2.3.2
      -
        name: Prepare
        id: prep
        run: |
          DOCKER_IMAGE=localhost:5000/name/app
          VERSION=noop
          if [ "${{ github.event_name }}" = "schedule" ]; then
            VERSION=nightly
          elif [[ $GITHUB_REF == refs/tags/* ]]; then
            VERSION=${GITHUB_REF#refs/tags/}
          elif [[ $GITHUB_REF == refs/heads/* ]]; then
            VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
            if [ "${{ github.event.repository.default_branch }}" = "$VERSION" ]; then
              VERSION=edge
            fi
          elif [[ $GITHUB_REF == refs/pull/* ]]; then
            VERSION=pr-${{ github.event.number }}
          fi
          TAGS="${DOCKER_IMAGE}:${VERSION}"
          if [[ $VERSION =~ ^v[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
            MINOR=${VERSION%.*}
            MAJOR=${MINOR%.*}
            TAGS="$TAGS,${DOCKER_IMAGE}:${MINOR},${DOCKER_IMAGE}:${MAJOR},${DOCKER_IMAGE}:latest"
          elif [ "${{ github.event_name }}" = "push" ]; then
            TAGS="$TAGS,${DOCKER_IMAGE}:sha-${GITHUB_SHA::8}"
          fi
          echo ::set-output name=version::${VERSION}
          echo ::set-output name=tags::${TAGS}
          echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1
        with:
          driver-opts: network=host
      -
        name: Build and export to Docker client
        uses: ./
        with:
          context: ./test
          file: ./test/Dockerfile
          outputs: type=docker
          tags: ${{ steps.prep.outputs.tags }}
          labels: |
            org.opencontainers.image.created=${{ steps.prep.outputs.created }}
            org.opencontainers.image.url=${{ github.event.repository.html_url }}
            org.opencontainers.image.source=${{ github.event.repository.clone_url }}
            org.opencontainers.image.version=${{ steps.prep.outputs.version }}
            org.opencontainers.image.revision=${{ github.sha }}
            org.opencontainers.image.licenses=${{ github.event.repository.license.spdx_id }}
      -
        name: Build and push to local registry
        uses: ./
        with:
          context: ./test
          file: ./test/Dockerfile
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.prep.outputs.tags }}
          labels: |
            org.opencontainers.image.created=${{ steps.prep.outputs.created }}
            org.opencontainers.image.url=${{ github.event.repository.html_url }}
            org.opencontainers.image.source=${{ github.event.repository.clone_url }}
            org.opencontainers.image.version=${{ steps.prep.outputs.version }}
            org.opencontainers.image.revision=${{ github.sha }}
            org.opencontainers.image.licenses=${{ github.event.repository.license.spdx_id }}
      -
        name: Inspect image
        run: |
          docker image inspect localhost:5000/name/app:${{ steps.prep.outputs.version }}
      -
        name: Check manifest
        if: github.event_name != 'pull_request'
        run: |
          docker buildx imagetools inspect localhost:5000/name/app:${{ steps.prep.outputs.version }}
      -
        name: Dump context
        if: always()
        uses: crazy-max/ghaction-dump-context@v1