build_config_server.yaml

name: Build Config Server

on:
  pull_request:
    branches:
    - main
    paths:
    - '.github/workflows/build_config_server.yaml'
    - 'config-server/**'
    - 'build.ps1'
  push:
    branches:
    - main
    paths:
    - '.github/workflows/build_config_server.yaml'
    - 'config-server/**'
    - 'build.ps1'

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: true

permissions:
  contents: read
  pull-requests: 'write'

env:
  IMAGE_NAME: config-server
  REGISTRY: ${{ vars.DOCKER_REGISTRY }}

jobs:
  build-push:
    name: Build and push image
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4

    - name: Build Image
      run: ./build.ps1 -Name '${{ env.IMAGE_NAME }}' -Registry '${{ env.REGISTRY }}' -Tag '${{ env.TAG }}'
      shell: pwsh
      env:
        TAG: ${{ github.event_name == 'pull_request' && format('pr-{0}', github.event.number) || '' }}

    - name: Login to container registry
      uses: docker/login-action@v3
      with:
        registry: ${{ vars.DOCKER_REGISTRY }}
        username: ${{ secrets.DOCKER_USERNAME }}
        password: ${{ secrets.DOCKER_PASSWORD }}

    - name: Push image
      run: docker push --all-tags ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

    - name: Post or update PR comment with image run instructions
      uses: actions/github-script@v7
      if: ${{ github.event_name == 'pull_request' }}
      with:
        script: |
          const marker = '<!-- IMAGE_INSTRUCTIONS_CONFIG_SERVER -->';
          const body = `${marker}
          To run the Spring Cloud Config Server image built for this pull request:
          \`\`\`bash
          docker run --rm -d --pull=always -p 8888:8888 --name config-pr steeltoe.azurecr.io/config-server:pr-${{ github.event.number }}
          \`\`\``;

          const { data: comments } = await github.rest.issues.listComments({
            owner: context.repo.owner,
            repo: context.repo.repo,
            issue_number: context.issue.number,
            per_page: 100,
          });

          const existingComment = comments.find(comment =>
            comment.user.login === 'github-actions[bot]' && comment.body.startsWith(marker)
          );

          if (existingComment) {
            await github.rest.issues.updateComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              comment_id: existingComment.id,
              body: body,
            });
          } else {
            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
              body: body,
            });
          }