GitHub action to edit pull request with Vercel preview deploy URL for the branch

vercel-preview-url.yml

name: Link to Vercel preview deploy

on: 
  pull_request:
    types: [opened]

jobs:
  update-pr:
    runs-on: ubuntu-latest
    steps:
    - name: Get branch name
      shell: bash
      run: echo "BRANCH_NAME=$(echo ${GITHUB_HEAD_REF} | tr / -)" >> $GITHUB_ENV
      id: extract_branch
    - name: Append PR body with preview deploy URL
      uses: devindford/Append_PR_Comment@v1.1.2
      with:
        repo-token: "${{ secrets.GITHUB_TOKEN }}"
        body-template: |
          ---
          
          🔗 **Preview**: https://<project-name>-git-${{ env.BRANCH_NAME }}.<scope-slug>.vercel.app