lib-liveblocks/.github/workflows/docker-image.yml at main · code/lib-liveblocks · GitHub

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# Reusable workflow: build and publish a Docker image to GHCR.
name: "[reusable] Build Docker image"

on:
  workflow_call:
    inputs:
      image:
        required: true
        type: string
        description: "Image name (e.g. liveblocks/cli)"
      dockerfile:
        required: false
        type: string
        default: "Dockerfile"
        description: "Dockerfile path relative to context"
      context:
        required: false
        type: string
        default: "tools/liveblocks-cli"
      build-args:
        required: false
        type: string
      is_release:
        required: true
        type: string
        description:
          "'true' for release builds (tag push or workflow_dispatch with
          version), 'false' otherwise. Controls whether latest tag and version
          tags are applied."
      release_version:
        required: true
        type: string
        description:
          "Explicit semver for tagging (e.g. 1.0.6, without v prefix). Non-empty
          only for workflow_dispatch triggers where there is no git tag for
          type=semver to derive from. Pass empty string for tag-push and
          non-release builds."
    outputs:
      tags:
        value: ${{ jobs.build.outputs.tags }}
      digest:
        value: ${{ jobs.build.outputs.digest }}

jobs:
  build:
    runs-on: ubuntu-latest

    outputs:
      tags: ${{ steps.meta.outputs.tags }}
      digest: ${{ steps.build.outputs.digest }}

    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

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

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Compute major.minor version
        id: version-parts
        if: inputs.release_version != ''
        run: |
          VERSION="${{ inputs.release_version }}"
          MAJOR_MINOR="${VERSION%.*}"
          echo "major_minor=${MAJOR_MINOR}" >> "$GITHUB_OUTPUT"

      # Tags applied per trigger type:
      #
      # Tag push (e.g. v1.0.6):
      #   - 1.0.6, 1.0, latest  (from type=semver + type=raw)
      #   - main                 (from type=ref,event=branch)
      #   - sha-abc1234          (from type=sha)
      #
      # workflow_dispatch with release_version=1.0.6:
      #   - 1.0.6, 1.0, latest  (from type=raw with explicit version)
      #   - main                 (from type=ref,event=branch)
      #   - sha-abc1234          (from type=sha)
      #
      # Branch push (non-release):
      #   - main                 (from type=ref,event=branch)
      #   - sha-abc1234          (from type=sha)
      #
      # Pull request:
      #   - pr-123               (from type=ref,event=pr)
      #   - sha-abc1234          (from type=sha)
      - name: Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ghcr.io/${{ inputs.image }}
          tags: |
            type=semver,pattern={{version}},enable=${{ inputs.is_release == 'true' && inputs.release_version == '' }}
            type=semver,pattern={{major}}.{{minor}},enable=${{ inputs.is_release == 'true' && inputs.release_version == '' }}
            type=raw,value=${{ inputs.release_version }},enable=${{ inputs.release_version != '' }}
            type=raw,value=${{ steps.version-parts.outputs.major_minor }},enable=${{ inputs.release_version != '' }}
            type=raw,value=latest,enable=${{ inputs.is_release == 'true' }}
            type=ref,event=branch
            type=ref,event=pr
            type=sha

      - name: Build and push
        id: build
        uses: docker/build-push-action@v6
        with:
          context: ${{ inputs.context }}
          file: ${{ inputs.context }}/${{ inputs.dockerfile }}
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: ${{ inputs.build-args }}
          cache-from: type=gha,scope=${{ inputs.image }}
          cache-to: type=gha,mode=max,scope=${{ inputs.image }}