Automate PR for Production

create-pull-request.yaml

name: Create and Update Pull Request for Production Release
on:
  push:
    branches:
      - main

jobs:
  create_and_update_pr:
    runs-on: ubuntu-latest
    steps:

      - id: gh_pr_create
        name: Create Pull Request if not exists
        run: >-
          gh pr view ||
          gh pr create \
            --draft \
            --base=production \
            --title="production release $(date -I'date')" \
            --body-file=- <<'EOL'
          # Production Release

          ## Changes

          <!-- PR list begin -->
          <!-- PR list end -->

          ## Foo

          ${{ vars.BAR }}
          EOL
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GH_REPO: ${{ github.repository }}

      - id: gh_pr_edit
        name: Update Pull Request body and title
        run: |
          gh pr view --json='commits' \
            --jq='.commits[].messageHeadline|match("#\\d+")|.string|"* \(.)"' \
            >${PR_LIST_FILENAME}
          gh pr view --json='body' --jq='.body' |
          awk -v lines=${PR_LIST_FILENAME} '
            /<!-- PR list begin -->/ {in_ls=1; print; while((getline line<lines) >0) print line}
            /<!-- PR list end -->/ {in_ls=0}
            in_ls==0 {print}
          ' |
          gh pr edit \
            --body-file=- \
            --title="production release $(date -I'date')"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GH_REPO: ${{ github.repository }}
          PR_LIST_FILENAME: PR-list.txt

file path: .github/workflows/release-PR.yaml