update-major-tag.yml

name: Update major tag

on:
  release:
    types: [published]

jobs:
  update:
    runs-on: ubuntu-18.04
    steps:

    - uses: actions/checkout@v2

    - name: Update major tag
      if: github.event.release.prerelease == false
      run: |
        git config user.name "${GITHUB_ACTOR}"
        git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
        git remote set-url origin "https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${GITHUB_REPOSITORY}.git"
        export TAG_NAME="${GITHUB_REF##refs/tags/}"
        export TAG_MAJOR="${TAG_NAME%%.*}"
        git tag --force -a "${TAG_MAJOR}" -m "Release ${TAG_NAME}"
        git push --force origin "${TAG_MAJOR}"