build-docker-images.yml

name: Build Docker Images

on:
  push:
  workflow_dispatch:

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: "ghcr.io/silitics/rugpi-bakery"
  PI_BASE_IMAGE: "https://downloads.raspberrypi.org/raspios_lite_arm64/images/raspios_lite_arm64-2023-05-03/2023-05-03-raspios-bullseye-arm64-lite.img.xz"

jobs:
  build-docker-images:
    name: Build Docker Images
    runs-on: ubuntu-latest
    strategy:
      matrix:
        platform: [linux/amd64, linux/arm64]
    steps:
      - uses: actions/checkout@v3
        with:
          lfs: true

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

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

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

      - name: Login to Container Registry
        uses: docker/login-action@v2
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and Push Image
        id: build
        uses: docker/build-push-action@v4
        with:
          context: .
          file: docker/Dockerfile.rugpi-bakery
          platforms: ${{ matrix.platform }}
          labels: ${{ steps.meta.outputs.labels }}
          push: true
          tags: ${{ env.IMAGE_NAME }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          outputs: type=image,name=${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true

      - name: Export Digest
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"

      - name: Upload Digest
        uses: actions/upload-artifact@v3
        with:
          name: digests
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  merge-docker-images:
    runs-on: ubuntu-latest
    name: Merge Docker Images
    needs:
      - build-docker-images
    steps:
      - name: Download Digests
        uses: actions/download-artifact@v3
        with:
          name: digests
          path: /tmp/digests

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

      - name: Docker Meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}

      - name: Login to Container Registry
        uses: docker/login-action@v2
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Create Manifest List and Push
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf '${{ env.IMAGE_NAME }}@sha256:%s ' *)
      
      - name: Inspect Image
        run: |
          docker buildx imagetools inspect ${{ env.IMAGE_NAME }}:${{ steps.meta.outputs.version }}

  build-template-image:
    name: Build Image
    runs-on: ubuntu-latest
    needs: [merge-docker-images]
    steps:
      - uses: actions/checkout@v3
        with:
          submodules: recursive

      - name: List Files
        working-directory: ./template
        run: ls -l

      - name: Install QEMU
        run: docker run --privileged --rm tonistiigi/binfmt --install arm64

      - name: Extract Image
        working-directory: ./template
        run: ./run-bakery extract ${{ env.PI_BASE_IMAGE }} build/base.tar

      - name: Customize System
        working-directory: ./template
        run: ./run-bakery customize build/base.tar build/customized.tar

      - name: Bake Image
        working-directory: ./template
        run: ./run-bakery bake build/customized.tar build/customized.img