build-release.yml

name: build-release

on:
  push:
    tags:
      - "**"
  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: lightpanda-io/v8

jobs:
  # build-release compiles v8 from source using zig.
  # It pushes a docker image containing only /libc_v8.a file from scratch image.
  # https://docs.github.com/en/packages/managing-github-packages-using-github-actions-workflows/publishing-and-installing-a-package-with-github-actions#publishing-a-package-using-an-action
  build-release:
    strategy:
      matrix:
        include:
          - arch: x86_64
            os: linux
            build_arch: amd64
            zig_docker_version: 0.12.0-dev.1773-8a8fd47d2
    name: build-release
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: recursive
          fetch-depth: 0

      - name: Read version
        id: read-version
        run: |
          echo "version=`cat V8_REVISION`" >> "$GITHUB_OUTPUT"

      - name: Docker connect
        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
      - name: Docker build
        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
        with:
          context: .
          push: true
          tags: |
            ${{ steps.meta.outputs.tags }}
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{steps.meta.outputs.version}}_v8-${{steps.read-version.outputs.version}}_zig-${{matrix.zig_docker_version}}
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{matrix.zig_docker_version}}
          labels: |
            ${{ steps.meta.outputs.labels }}
          build-args: |
            ZIG_DOCKER_VERSION=${{matrix.zig_docker_version}}
            ARCH=${{matrix.arch}}
            OS=${{matrix.os}}
          platforms: ${{matrix.os}}/${{matrix.build_arch}}