image-prs.yaml

name: Image PRs Build

on:
  pull_request_target:
    types:
      - opened
      - synchronize
      - reopened
  push:
    branches:
      - master

jobs:
  build-and-push-prs:
    if: ${{ github.repository == 'cilium/echoserver-udp' }}
    runs-on: ubuntu-22.04
    strategy:
      matrix:
        include:
          - name: echoserver-udp
            dockerfile: ./Dockerfile

    steps:
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@0d103c3126aa41d772a8362f6aa67afac040f80c

      - name: Set up QEMU
        uses: docker/setup-qemu-action@68827325e0b33c7199eb31dd4e31fbe9023e06e3

      - name: Login to quay.io for CI
        uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d
        with:
          registry: quay.io
          username: ${{ secrets.QUAY_CI_ECHOSERVER_UDP_USERNAME }}
          password: ${{ secrets.QUAY_CI_ECHOSERVER_UDP_PASSWORD }}

      - name: Getting image tag
        id: tag
        run: |
          if [ ${{ github.event.pull_request.head.sha }} != "" ]; then
            echo tag=${{ github.event.pull_request.head.sha }} >> $GITHUB_OUTPUT
          else
            echo tag=${{ github.sha }} >> $GITHUB_OUTPUT
          fi

      - name: Checkout Source Code
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
        with:
          ref: ${{ steps.tag.outputs.tag }}

      # master branch pushes
      - name: CI Build ${{ matrix.name }}
        if: ${{ github.event_name != 'pull_request_target' }}
        uses: docker/build-push-action@4a13e500e55cf31b7a5d59a38ab2040ab0f42f56
        id: docker_build_ci_master
        with:
          context: .
          file: ${{ matrix.dockerfile }}
          push: true
          platforms: linux/amd64,linux/arm64
          tags: |
            quay.io/${{ github.repository_owner }}/${{ matrix.name }}-ci:latest
            quay.io/${{ github.repository_owner }}/${{ matrix.name }}-ci:${{ steps.tag.outputs.tag }}

      - name: CI Image Releases digests
        if: ${{ github.event_name != 'pull_request_target' }}
        shell: bash
        run: |
          mkdir -p image-digest/
          echo "quay.io/${{ github.repository_owner }}/${{ matrix.name }}-ci:latest@${{ steps.docker_build_ci_master.outputs.digest }}" > image-digest/${{ matrix.name }}.txt
          echo "quay.io/${{ github.repository_owner }}/${{ matrix.name }}-ci:${{ steps.tag.outputs.tag }}@${{ steps.docker_build_ci_master.outputs.digest }}" >> image-digest/${{ matrix.name }}.txt

      # PR updates
      - name: CI Build ${{ matrix.name }}
        if: ${{ github.event_name == 'pull_request_target' }}
        uses: docker/build-push-action@4a13e500e55cf31b7a5d59a38ab2040ab0f42f56
        id: docker_build_ci_pr
        with:
          context: .
          file: ${{ matrix.dockerfile }}
          push: true
          platforms: linux/amd64,linux/arm64
          tags: |
            quay.io/${{ github.repository_owner }}/${{ matrix.name }}-ci:${{ steps.tag.outputs.tag }}

      - name: CI Image Releases digests
        if: ${{ github.event_name == 'pull_request_target' }}
        shell: bash
        run: |
          mkdir -p image-digest/
          echo "quay.io/${{ github.repository_owner }}/${{ matrix.name }}-ci:${{ steps.tag.outputs.tag }}@${{ steps.docker_build_ci_pr.outputs.digest }}" >> image-digest/${{ matrix.name }}.txt

      # Upload artifact digests
      - name: Upload artifact digests
        uses: actions/upload-artifact@5d5d22a31266ced268874388b861e4b58bb5c2f3
        with:
          name: image-digest ${{ matrix.name }}
          path: image-digest
          retention-days: 1

  image-digests:
    if: ${{ github.repository == 'cilium/echoserver-udp' }}
    name: Display Digests
    runs-on: ubuntu-22.04
    needs: build-and-push-prs
    steps:
      - name: Downloading Image Digests
        shell: bash
        run: |
          mkdir -p image-digest/

      - name: Download digests of all images built
        uses: actions/download-artifact@c850b930e6ba138125429b7e5c93fc707a7f8427
        with:
          path: image-digest/

      - name: Image Digests Output
        shell: bash
        run: |
          cd image-digest/
          find -type f | sort | xargs -d '\n' cat