buildkit.yml

name: buildkit

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

on:
  workflow_dispatch:
  push:
    branches:
      - 'master'
      - 'v[0-9]+.[0-9]+'
    tags:
      - 'v*'
  pull_request:
    paths-ignore:
      - 'README.md'
      - 'docs/**'
      - 'frontend/dockerfile/docs/**'

env:
  GO_VERSION: "1.20"
  SETUP_BUILDX_VERSION: "latest"
  SETUP_BUILDKIT_IMAGE: "moby/buildkit:latest"
  IMAGE_NAME: "ghcr.io/gitpod-io/buildkit"
  PLATFORMS: "linux/amd64"
  DESTDIR: "./bin"

jobs:
  prepare:
    runs-on: ubuntu-22.04
    outputs:
      tag: ${{ steps.prep.outputs.tag }}
      push: ${{ steps.prep.outputs.push }}
      platforms: ${{ steps.prep.outputs.platforms }}
    steps:
      -
        name: Checkout
        uses: actions/checkout@v3
      -
        name: Prepare
        id: prep
        run: |
          TAG=pr
          PUSH=false
          if [ "${{ github.event_name }}" = "schedule" ]; then
            TAG=nightly
            PUSH=push
          elif [[ $GITHUB_REF == refs/tags/v* ]]; then
            TAG=${GITHUB_REF#refs/tags/}
            PUSH=push
          elif [[ $GITHUB_REF == refs/heads/* ]]; then
            TAG=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
            if [ $GITHUB_REF = "refs/heads/${{ github.event.repository.default_branch }}" ]; then
              PUSH=push
            fi
          fi
          if [ "$GITHUB_REPOSITORY" != "moby/buildkit" ]; then
            PUSH=false
          fi
          echo "tag=${TAG}" >>${GITHUB_OUTPUT}
          echo "push=${PUSH}" >>${GITHUB_OUTPUT}
          echo ::set-output name=platforms::'["linux/amd64"]'

  binaries:
    runs-on: ubuntu-22.04
    needs:
      - prepare
    strategy:
      fail-fast: false
      matrix:
        platform: ${{ fromJson(needs.prepare.outputs.platforms) }}
    steps:
      -
        name: Prepare
        run: |
          platform=${{ matrix.platform }}
          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
      -
        name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
      -
        name: Expose GitHub Runtime
        uses: crazy-max/ghaction-github-runtime@v2
      -
        name: Set up QEMU
        uses: docker/setup-qemu-action@v2
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
        with:
          version: ${{ env.SETUP_BUILDX_VERSION }}
          driver-opts: image=${{ env.SETUP_BUILDKIT_IMAGE }}
          buildkitd-flags: --debug
      -
        name: Build
        run: |
          make release
        env:
          RELEASE: ${{ startsWith(github.ref, 'refs/tags/v') }}
          PLATFORMS: ${{ matrix.platform }}
          CACHE_FROM: type=gha,scope=binaries-${{ env.PLATFORM_PAIR }}
          CACHE_TO: type=gha,scope=binaries-${{ env.PLATFORM_PAIR }}
      -
        name: Upload artifacts
        uses: actions/upload-artifact@v3
        with:
          name: buildkit
          path: ${{ env.DESTDIR }}/*
          if-no-files-found: error

  image:
    runs-on: ubuntu-22.04
    needs:
      - prepare
    strategy:
      fail-fast: false
      matrix:
        target-stage:
          - ''
    steps:
      -
        name: Checkout
        uses: actions/checkout@v3
      -
        name: Expose GitHub Runtime
        uses: crazy-max/ghaction-github-runtime@v2
      -
        name: Set up QEMU
        uses: docker/setup-qemu-action@v2
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
        with:
          version: ${{ env.SETUP_BUILDX_VERSION }}
          driver-opts: image=${{ env.SETUP_BUILDKIT_IMAGE }}
          buildkitd-flags: --debug
      -
        name: Login to GitHub Container Registry
        if: needs.prepare.outputs.push == 'push'
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      -
        name: Build ${{ needs.prepare.outputs.tag }}
        run: |
          ./hack/images "${{ needs.prepare.outputs.tag }}" "$IMAGE_NAME" "${{ needs.prepare.outputs.push }}"
        env:
          RELEASE: ${{ startsWith(github.ref, 'refs/tags/v') }}
          TARGET: ${{ matrix.target-stage }}
          CACHE_FROM: type=gha,scope=image${{ matrix.target-stage }}
          CACHE_TO: type=gha,scope=image${{ matrix.target-stage }}

  release:
    runs-on: ubuntu-22.04
    needs:
      - prepare
      - binaries
      - image
    steps:
      -
        name: Download artifacts
        uses: actions/download-artifact@v3
        with:
          name: buildkit
          path: ${{ env.DESTDIR }}
      -
        name: List artifacts
        run: |
          tree -nh ${{ env.DESTDIR }}
      -
        name: GitHub Release
        if: startsWith(github.ref, 'refs/tags/v')
        uses: softprops/action-gh-release@de2c0eb89ae2a093876385947365aca7b0e5f844  # v0.1.15
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          draft: true
          files: ${{ env.DESTDIR }}/*
          name: ${{ needs.prepare.outputs.tag }}