docker.yaml

name: Build and Publish Docker Image

on:
  workflow_dispatch:
    inputs:
      target:
        type: choice
        description: Which image to release
        required: true
        options:
          - kona-node
          - kona-host
          - asterisc-builder
          - cannon-builder
          - kona-asterisc-prestate
          - kona-cannon-prestate
  push:
    tags:
      # matches tags like `service/v1.0.0`
      - '*/v*'

env:
  REGISTRY: ghcr.io
  REGISTRY_IMAGE: ghcr.io/op-rs/kona
  GIT_REF_NAME: ${{ github.ref_name }}

jobs:
  prepare:
    name: Prepare Bake
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.platforms.outputs.matrix }}
      target: ${{ steps.target-spec.outputs.target }}
      bake_target: ${{ steps.target-spec.outputs.bake_target }}
      bin_target: ${{ steps.target-spec.outputs.bin_target }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Get Valid Targets
        id: get-targets
        run: |
          # Extract target names from docker-bake.hcl, excluding docker-metadata-action
          TARGETS=$(awk '/^target "[^"]*" {/ { gsub(/"/, "", $2); if ($2 != "docker-metadata-action") print $2 }' docker/docker-bake.hcl | jq -R -s -c 'split("\n") | map(select(length > 0))')
          echo "targets=$TARGETS" >> $GITHUB_OUTPUT
          echo "Available targets: $TARGETS"

      - name: Specify Target
        id: target-spec
        run: |
          export TARGET="${{ inputs.target }}"
          if [[ -z $TARGET ]]; then
              export TARGET="${GIT_REF_NAME%/*}"
          fi
          echo "Target: $TARGET"
          echo "target=$TARGET" >> $GITHUB_OUTPUT

          # Check if target is in valid targets list
          if echo "${{ steps.get-targets.outputs.targets }}" | jq -e 'contains(["'"$TARGET"'"])' > /dev/null; then
            echo "bake_target=$TARGET" >> $GITHUB_OUTPUT
            echo "bin_target=" >> $GITHUB_OUTPUT
            echo "Target '$TARGET' is a valid bake target"
          else
            echo "bake_target=generic" >> $GITHUB_OUTPUT
            echo "bin_target=$TARGET" >> $GITHUB_OUTPUT
            echo "Target '$TARGET' will use generic build with BIN_TARGET=$TARGET"
          fi

      - name: Create matrix
        id: platforms
        run: |
          echo "matrix=$(docker buildx bake -f docker/docker-bake.hcl ${{ steps.target-spec.outputs.bake_target }} --print | jq -cr '.target."${{ steps.target-spec.outputs.bake_target }}".platforms')" >> ${GITHUB_OUTPUT}

      - name: Show matrix
        run: |
          echo "Matrix: ${{ steps.platforms.outputs.matrix }}"
          echo "Target: ${{ steps.target-spec.outputs.target }}"
          echo "Bake Target: ${{ steps.target-spec.outputs.bake_target }}"
          echo "Bin Target: ${{ steps.target-spec.outputs.bin_target }}"

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY_IMAGE }}/${{ steps.target-spec.outputs.target }}
          tags: |
            type=ref,event=branch
            type=match,pattern=v(.*),group=1,event=tag
            type=ref,event=pr

      - name: Rename meta bake definition file
        run: |
          mv "${{ steps.meta.outputs.bake-file }}" "${{ runner.temp }}/bake-meta.json"

      - name: Upload meta bake definition
        uses: actions/upload-artifact@v4
        with:
          name: bake-meta
          path: ${{ runner.temp }}/bake-meta.json
          if-no-files-found: error
          retention-days: 1

  build:
    name: Build Image (${{ needs.prepare.outputs.target }} - ${{ matrix.platform }})
    runs-on: ${{ matrix.platform == 'linux/amd64' && 'ubuntu-latest' || 'ubuntu-22.04-arm' }}
    needs:
      - prepare
    strategy:
      fail-fast: false
      matrix:
        platform: ${{ fromJson(needs.prepare.outputs.matrix) }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Prepare
        run: |
          platform=${{ matrix.platform }}
          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV

      - name: Download meta bake definition
        uses: actions/download-artifact@v4
        with:
          name: bake-meta
          path: ${{ runner.temp }}

      - name: Authenticate with container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Build
        id: bake
        uses: docker/bake-action@v6
        env:
          BIN_TARGET: ${{ needs.prepare.outputs.bin_target }}
        with:
          files: |
            ./docker/docker-bake.hcl
            cwd://${{ runner.temp }}/bake-meta.json
          targets: ${{ needs.prepare.outputs.bake_target }}
          set: |
            *.tags=
            *.platform=${{ matrix.platform }}
            *.output=type=image,"name=${{ env.REGISTRY_IMAGE }}/${{ needs.prepare.outputs.target }}",push-by-digest=true,name-canonical=true,push=true

      - name: Export digest
        run: |
          mkdir -p ${{ runner.temp }}/digests
          digest="${{ fromJSON(steps.bake.outputs.metadata)[needs.prepare.outputs.bake_target]['containerimage.digest'] }}"
          touch "${{ runner.temp }}/digests/${digest#sha256:}"

      - name: Upload digest
        uses: actions/upload-artifact@v4
        with:
          name: digests-${{ env.PLATFORM_PAIR }}
          path: ${{ runner.temp }}/digests/*
          if-no-files-found: error
          retention-days: 1

  merge:
    name: Publish Manifest (${{ needs.prepare.outputs.target }})
    runs-on: ubuntu-latest
    needs:
      - prepare
      - build
    steps:
      - name: Download meta bake definition
        uses: actions/download-artifact@v4
        with:
          name: bake-meta
          path: ${{ runner.temp }}

      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: ${{ runner.temp }}/digests
          pattern: digests-*
          merge-multiple: true

      - name: Authenticate with container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Create manifest list and push
        working-directory: ${{ runner.temp }}/digests
        run: |
          docker buildx imagetools create $(jq -cr '.target."docker-metadata-action".tags | map(select(startswith("${{ env.REGISTRY_IMAGE }}/${{ needs.prepare.outputs.target }}")) | "-t " + .) | join(" ")' ${{ runner.temp }}/bake-meta.json) \
            $(printf '${{ env.REGISTRY_IMAGE }}/${{ needs.prepare.outputs.target }}@sha256:%s ' *)

      - name: Inspect image
        run: |
          docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}/${{ needs.prepare.outputs.target }}:$(jq -r '.target."docker-metadata-action".args.DOCKER_META_VERSION' ${{ runner.temp }}/bake-meta.json)