publish.yaml

---
# yaml-language-server: $schema=https://json.schemastore.org/github-workflow.json
name: Build & publish container images

on:
  workflow_dispatch: {}
  # push:
  #   branches:
  #     - main

jobs:
  find-changed-images:
    runs-on: ubuntu-latest
    outputs:
      apps: ${{ steps.set-matrix.outputs.apps }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Collect changed files
        uses: dorny/paths-filter@v3
        id: filter
        with:
          base: 'main'
          list-files: json
          filters: |
            changed:
              - added|deleted|modified: 'apps/*/**'

      - name: Set apps Matrix
        if: ${{ steps.filter.outputs.changed == 'true' }}
        id: set-matrix
        run: |
          PATHS='${{ steps.filter.outputs.changed_files }}'
          DATA=$(echo $PATHS | jq -c '. | map(split("/")[1]) | unique')
          echo "apps=$DATA" >> "$GITHUB_OUTPUT"

  build-and-publish-changed-images:
    needs: find-changed-images
    if: ${{ needs.find-changed-images.outputs.apps != '' && toJson(fromJson(needs.find-changed-images.outputs.apps)) != '[]' }}
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        app: ${{ fromJSON(needs.find-changed-images.outputs.apps) }}

    steps:
      - name: Lowercase repository owner
        shell: bash
        run: echo "LOWERCASE_REPO_OWNER=${GITHUB_REPOSITORY_OWNER,,}" >> $GITHUB_ENV

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

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

      - name: Container meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            ghcr.io/${{ env.LOWERCASE_REPO_OWNER }}/${{ matrix.app }}
          tags: |
            type=sha, format=long

      - name: Build and push to ghcr
        uses: docker/build-push-action@v6
        with:
          context: .
          file: 'apps/${{ matrix.app }}/Dockerfile'
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}