Github Action - Comment on PR using the PR number

comment_with_pr_number.yml

name: PR Commenter

on:
  pull_request:
    types: [opened, reopened]

jobs:
  comment:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/github-script@v4
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            const { issue: { number: issue_number }, repo: { owner, repo }  } = context;
            let message = "\nsomething-${{github.event.number}}
            github.issues.createComment({ issue_number, owner, repo, body: message });