publish-containerimage.yml

name: Publish / Mastodon container images

on:
  # Run every Monday at 12:00 EDT (16:00 UTC)
  schedule:
    - cron: "0 16 * * MON"
  # Allow manual trigger
  workflow_dispatch:
    inputs:
      isDev:
        description: "Is dev?"
        required: false
        type: boolean
        default: false

permissions:
  actions: write
  packages: write

env:
  IMAGE_NAME: ghcr.io/${{ github.repository_owner }}/${{ inputs.isDev == true && 'ocw-social-mastodon-dev' || 'ocw-social-mastodon' }}

jobs:
  build:
    name: Build and push container image
    runs-on: ${{ matrix.platform == 'linux/arm64' && 'ubuntu-latest-arm64' || 'ubuntu-latest' }}
    
    strategy:
      fail-fast: false
      matrix:
        platform:
          - "linux/amd64"
          - "linux/arm64"

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

      - name: "Checkout: Latest commit"
        uses: actions/checkout@v4
        with:
          submodules: true

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

      #- name: Log into Azure container registry
      #  uses: docker/login-action@v3
      #  with:
      #    registry: smallsonlinemstdncontainers.azurecr.io
      #    username: ${{ secrets.REGISTRY_USERNAME }}
      #    password: ${{ secrets.REGISTRY_PASSWORD }}

      - name: Log into GitHub container registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push container image to registry
        id: build
        uses: docker/build-push-action@v6
        with:
          context: ./
          file: ./Dockerfile.main
          platforms: ${{ matrix.platform }}
          outputs: type=image,name=${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true

      - name: Export digest
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"

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

  merge:
    name: Merge digests and push manifest
    runs-on: ubuntu-latest
    needs:
      - build

    steps:
      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: /tmp/digests
          pattern: digests-*
          merge-multiple: true

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

      - name: Set metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value=latest,enable={{is_default_branch}}
            type=schedule,pattern={{date 'YYYYMMDD-hhmmss' tz='UTC'}}
            type=sha,suffix=-{{date 'YYYYMMDD-hhmmss' tz='UTC'}}

      - name: Log into GitHub container registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf '${{ env.IMAGE_NAME }}@sha256:%s ' *)

      - name: Inspect image
        run: |
          docker buildx imagetools inspect ${{ env.IMAGE_NAME }}:${{ steps.meta.outputs.version }}