oci-examples.yml

# Stage OCI container images through GitHub Actions (GHA) to GitHub Container Registry (GHCR).
name: OCI for examples

on:
  pull_request: ~
  push:
    tags:
      - '*.*.*'

  # Produce a nightly image every day at 6 a.m. CEST.
  schedule:
    - cron: '0 4 * * *'

  # Allow job to be triggered manually.
  workflow_dispatch:

# Cancel in-progress jobs when pushing to the same branch.
concurrency:
  cancel-in-progress: true
  group: ${{ github.workflow }}-${{ github.ref }}

# The name for the produced image at ghcr.io.
env:
  IMAGE_NAME: "${{ github.repository }}-examples"
  RECIPE_PATH: "release/oci-examples"

jobs:
  build_and_test:
    runs-on: ubuntu-latest

    steps:
      - name: Acquire sources
        uses: actions/checkout@v3

      - name: Setup Python
        uses: actions/setup-python@v4
        with:
          python-version: "3.11"
          architecture: "x64"
          cache: "pip"
          cache-dependency-path: "pyproject.toml"

      - name: Build wheel package
        run: |
          pip install build
          python -m build

      - name: Upload wheel package
        uses: actions/upload-artifact@v3
        with:
          name: ${{ runner.os }}-wheel-${{ github.sha }}
          path: dist/*.whl
          retention-days: 7

      - name: Run tests
        run: |
          if [[ -f ${{ env.RECIPE_PATH }}/test.yml ]]; then
            export DOCKER_BUILDKIT=1
            export COMPOSE_DOCKER_CLI_BUILD=1
            docker-compose --file ${{ env.RECIPE_PATH }}/test.yml build
            docker-compose --file ${{ env.RECIPE_PATH }}/test.yml run sut
          fi

  oci:
    needs: build_and_test
    runs-on: ubuntu-latest
    if: ${{ ! (startsWith(github.actor, 'dependabot') || github.event.pull_request.head.repo.fork ) }}

    steps:
      - name: Acquire sources
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Define image name and tags
        id: meta
        uses: docker/metadata-action@v4
        with:
          # List of OCI images to use as base name for tags
          images: |
            ghcr.io/${{ env.IMAGE_NAME }}
          # Generate OCI image tags based on the following events/attributes
          tags: |
            type=schedule,pattern=nightly
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}

      - name: Inspect metadata
        run: |
          echo "Tags:      ${{ steps.meta.outputs.tags }}"
          echo "Labels:    ${{ steps.meta.outputs.labels }}"

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v2

      - name: Cache OCI layers
        uses: actions/cache@v3
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Inspect builder
        run: |
          echo "Name:      ${{ steps.buildx.outputs.name }}"
          echo "Endpoint:  ${{ steps.buildx.outputs.endpoint }}"
          echo "Status:    ${{ steps.buildx.outputs.status }}"
          echo "Flags:     ${{ steps.buildx.outputs.flags }}"
          echo "Platforms: ${{ steps.buildx.outputs.platforms }}"

      - name: Login to GHCR
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ github.token }}

      - name: Build and push image
        uses: docker/build-push-action@v4
        with:
          context: .
          file: ${{ env.RECIPE_PATH }}/Dockerfile
          platforms: linux/amd64,linux/arm64
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          push: true
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache-new

      - name: Move cache
        run: |
          rm -rf /tmp/.buildx-cache
          mv /tmp/.buildx-cache-new /tmp/.buildx-cache

      - name: Display git status
        run: |
          set -x
          git describe --tags --always
          git status