docker.yml

# Based on https://github.com/matrix-org/dendrite/blob/master/.github/workflows/docker-hub.yml

name: "Docker"

on:
  push:
    paths-ignore:
      - changelog.d/**'
  pull_request:
    branches: [ main ]
    paths-ignore:
      - changelog.d/**'
  release:
    types: [published]

  merge_group:


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

env:
  DOCKER_NAMESPACE: halfshot

jobs:
  docker-clean-metadata:
    runs-on: ubuntu-latest
    outputs:
      json: ${{ steps.meta.outputs.json }}
    steps:
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          tags: |
            type=semver,pattern={{version}}
            type=ref,event=branch
            type=ref,event=pr
            type=raw,value=latest,enable={{is_default_branch}}
          flavor: |
            latest=auto
          images: |
            ${{ env.DOCKER_NAMESPACE }}/matrix-hookshot
            ghcr.io/matrix-org/matrix-hookshot

  docker-build:
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    strategy:
      matrix:
        include:
          - os: ubuntu-latest
            arch: amd64
          - os: ubuntu-24.04-arm
            arch: arm64

    runs-on: ${{ matrix.os }}

    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_TOKEN }}
      - name: Log in to the GitHub Container registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          tags: |
            type=semver,pattern={{version}}
            type=ref,event=branch
            type=ref,event=pr
            type=raw,value=latest,enable={{is_default_branch}}
          flavor: |
            latest=auto
            suffix=-${{ matrix.arch }},onlatest=true
          images: |
            ${{ env.DOCKER_NAMESPACE }}/matrix-hookshot
            ghcr.io/matrix-org/matrix-hookshot

      - name: Build and push Docker images
        uses: docker/build-push-action@v6
        with:
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

  docker-manifest:
    needs: 
      - docker-build
      - docker-clean-metadata
    runs-on: ubuntu-latest

    strategy:
      matrix:
        image: ${{ fromJson(needs.docker-clean-metadata.outputs.json).tags }}

    steps:
      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_TOKEN }}

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

      - name: Create and push manifest
        run: |
          docker manifest create ${{ matrix.image }} ${{ matrix.image }}-amd64 ${{ matrix.image }}-arm64
          docker manifest push ${{ matrix.image }}