build-publish-images.yml

name: Build and publish container images

on:
  workflow_dispatch:
  schedule:
    - cron: "40 10 * * *"
  pull_request:
    branches: [main]
  push:
    tags:
      - "**"

jobs:
  check-base-images:
    name: Check base images on scheduled runs

    runs-on: ubuntu-22.04

    outputs:
      build-reposync: ${{ steps.reposync-base-image-check.outputs.build }}
      build-webserver: ${{ steps.webserver-base-image-check.outputs.build }}

    steps:
      - name: Check base image for ol-repo-sync
        id: reposync-base-image-check
        run: |
          BASE_LAYERS=$(skopeo inspect --config docker://ghcr.io/oracle/oraclelinux8-python:3.9-amd64 | jq -r '.rootfs.diff_ids[]')
          REPO_LAYERS=$(skopeo inspect --config docker://ghcr.io/djelibeybi/ol-repo-sync:main | jq -r '.rootfs.diff_ids[]')
          if [ -n "${REPO_LAYERS##*$BASE_LAYERS*}" ]; then
            echo "build=YES" >> $GITHUB_OUTPUT
            echo "::notice title=Checking base images::Triggering build for ol-repo-sync"
          else
            echo "build=NO" >> $GITHUB_OUTPUT
            echo "::notice title=Checking base images::Skipping build for ol-repo-sync"
          fi

      - name: Check base image for ol-repo-webserver
        id: webserver-base-image-check
        run: |
          BASE_LAYERS=$(skopeo inspect --config docker://ghcr.io/oracle/oraclelinux:8-slim | jq -r '.rootfs.diff_ids[]')
          REPO_LAYERS=$(skopeo inspect --config docker://ghcr.io/djelibeybi/ol-repo-webserver:main | jq -r '.rootfs.diff_ids[]')
          if [ -n "${REPO_LAYERS##*$BASE_LAYERS*}" ]; then
            echo "build=YES" >> $GITHUB_OUTPUT
            echo "::notice title=Checking base images::Triggering build for ol-repo-webserver"
          else
            echo "build=NO" >> $GITHUB_OUTPUT
            echo "::notice title=Checking base images::Skipping build for ol-repo-webserver"
          fi

  log-base-image-checks:
    name: Log check for base images
    runs-on: ubuntu-22.04
    needs: check-base-images
    steps:
      - env:
          REPOSYNC: ${{ needs.check-base-images.outputs.build-reposync }}
          WEBSERVER: ${{ needs.check-base-images.outputs.build-webserver }}
        run: |
          echo "Build reposync: $REPOSYNC"
          echo "Build webserver: $WEBSERVER"

  build-repo-sync-image:
    name: Build ol-repo-sync image
    needs: check-base-images

    if: github.event_name != 'schedule' || needs.check-base-images.outputs.build-reposync != 'NO'

    env:
      REGISTRY: ghcr.io
      IMAGE_NAME: djelibeybi/ol-repo-sync

    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Install cosign
        if: github.event_name != 'pull_request'
        uses: sigstore/cosign-installer@main
        with:
          cosign-release: "v1.13.1"

      - name: Setup Docker buildx
        uses: docker/setup-buildx-action@v2

      - name: Log into registry ${{ env.REGISTRY }}
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v2
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract container metadata
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Build and push container image
        id: build-and-push
        uses: docker/build-push-action@v3
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

      - name: Sign the published container image
        if: ${{ github.event_name != 'pull_request' }}
        env:
          COSIGN_EXPERIMENTAL: "true"
        run: cosign sign ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build-and-push.outputs.digest }}

  build-webserver-image:
    name: Build ol-repo-webserver image

    needs: check-base-images
    if: github.event_name != 'schedule' || needs.check-base-images.outputs.build-webserver != 'NO'
    env:
      REGISTRY: ghcr.io
      IMAGE_NAME: djelibeybi/ol-repo-webserver

    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Install cosign
        if: github.event_name != 'pull_request'
        uses: sigstore/cosign-installer@main
        with:
          cosign-release: "v1.13.1"

      - name: Setup Docker buildx
        uses: docker/setup-buildx-action@v2

      - name: Log into registry ${{ env.REGISTRY }}
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v2
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract container metadata
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Build and push Docker image
        id: build-and-push
        uses: docker/build-push-action@v3
        with:
          context: .
          file: ./Dockerfile.nginx
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

      - name: Sign the published Docker image
        if: ${{ github.event_name != 'pull_request' }}
        env:
          COSIGN_EXPERIMENTAL: "true"
        run: cosign sign ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build-and-push.outputs.digest }}