comment_trigger_example.yml

name: Example comment trigger

# https://dev.to/zirkelc/trigger-github-workflow-for-comment-on-pull-request-45l2

jobs:
  deploy:
    name: Deploy
    if: github.event.issue.pull_request && contains(github.event.comment.body, '/deploy')
    runs-on: ubuntu-latest

    steps:
      - name: Get PR branch
        uses: xt0rted/pull-request-comment-branch@v1
        id: comment-branch

      - name: Set latest commit status as pending
        uses: myrotvorets/set-commit-status-action@master
        with:
          sha: ${{ steps.comment-branch.outputs.head_sha }}
          token: ${{ secrets.GITHUB_TOKEN }}
          status: pending

      - name: Checkout PR branch
        uses: actions/checkout@v3
        with:
          ref: ${{ steps.comment-branch.outputs.head_ref }}

      - name: Setup Node.js 16
        uses: actions/setup-node@v3
        with:
          node-version: 16

      - name: Deploy
        run: |
          echo "Deploying..."

      - name: Set latest commit status as ${{ job.status }}
        uses: myrotvorets/set-commit-status-action@master
        if: always()
        with:
          sha: ${{ steps.comment-branch.outputs.head_sha }}
          token: ${{ secrets.GITHUB_TOKEN }}
          status: ${{ job.status }}

      - name: Add comment to PR
        uses: actions/github-script@v6
        if: always()
        with:
          script: |
            const name = '${{ github.workflow   }}';
            const url = '${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}';
            const success = '${{ job.status }}' === 'success';
            const body = `${name}: ${success ? 'succeeded ✅' : 'failed ❌'}\n${url}`;

            await github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: body
            })