do-release.yaml

# from: https://github.com/packit/packit/blob/main/.github/workflows/do_release.yml
name: Create a GitHub release once a release PR is merged

on:
  workflow_dispatch:
  pull_request:
    types:
      - closed

jobs:
  if_merged:
    if: github.event.pull_request.merged == true && contains(github.event.pull_request.labels.*.name, 'release') && github.repository_owner == 'rpm-software-management'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/create-github-app-token@v1
        id: app-token
        with:
          app-id: ${{ vars.RSM_CI_APP_ID }}
          private-key: ${{ secrets.RSM_CI_APP_PRIVATE_KEY }}

      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.base.ref }}

      - name: Create GitHub release
        run: |
          VERSION=$(grep -oP '^# \K[0-9.]*' CHANGELOG.md | head -n 1)
          # Take the lines between the first two headers from CHANGELOG.md,
          # and use it as a description for the new release.
          CHANGELOG=$(awk 'BEGIN { first = 0 } /^# / { if (first == 0) { first = 1 } else { exit } } /^[^#]/ { print $0 }' CHANGELOG.md)

          gh release create ${VERSION} \
            --target ${{ github.event.pull_request.base.ref }} \
            --draft \
            --title ${VERSION} \
            -n "${CHANGELOG}"
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}