build-images.yaml

name: "Build affected images on commit"

on:
  push:
    branches:
      - master
    paths:
      - "apps/**"
      - "!apps/**/README.md"

jobs:
  get-changes:
    name: Collect changes
    runs-on: ubuntu-latest
    outputs:
      addedOrModifiedImages: ${{ steps.collect-changes.outputs.addedOrModifiedImages }}
    steps:
      - name: Checkout
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4

      - name: Collect changes
        id: collect-changes
        uses: ./.github/actions/collect-changes

  generate-build-matrix:
    name: Generate matrix for building images
    runs-on: ubuntu-latest
    needs: ["get-changes"]
    outputs:
      matrix: ${{ steps.get-changed.outputs.changes }}
    if: ${{ needs.get-changes.outputs.addedOrModifiedImages }} != '[]'
    steps:
      - name: Install tools
        run: sudo apt-get install moreutils jo

      - name: Checkout
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
        with:
          fetch-depth: 0

      - name: Fetch modified images
        id: get-changed
        shell: bash
        run: |
          set -x
          declare -a changes_array=()
          while read -r app
          do
            while read -r build
            do
              change="$(jo app="$app" build="$build")"
              changes_array+=($change)
            done < <(yq -r '.builds[] | .name' "./apps/$app/.ci/metadata.yaml")
          done < <(echo '${{ needs.get-changes.outputs.addedOrModifiedImages }}' | jq --raw-output -c '.[]')
          output="$(jo -a ${changes_array[*]})"
          echo "changes=${output}" >> $GITHUB_OUTPUT
  images-build:
    uses: ./.github/workflows/action-image-build.yaml
    needs:
      - generate-build-matrix
    with:
      imagesToBuild: "${{ needs.generate-build-matrix.outputs.matrix }}"
      pushImages: "true"
    secrets: inherit