PigCI/pig-ci-rails

# From: https://github.com/hopsoft/stimulus_reflex/blob/master/.github/workflows/changelog.yml
name: Changelog

on:
  workflow_dispatch:
  release:
    types: [created]
  push:
    branches:
      - master

jobs:
  build:
    runs-on: ubuntu-latest
    timeout-minutes: 4
    if: "!contains(github.event.head_commit.message, '[nodoc]')"
    steps:
    - uses: actions/checkout@master
    - name: Set up Ruby 3.0
      uses: ruby/setup-ruby@v1
      with:
        ruby-version: 3.0
    - uses: actions/cache@v2
      with:
        path: vendor/bundle
        key: ${{ runner.os }}-changelog-gem-${{ hashFiles('**/Gemfile.lock') }}
        restore-keys: |
          ${{ runner.os }}-changelog-gem-
    - name: Create local changes
      run: |
        gem install github_changelog_generator -v "1.15.2"
        github_changelog_generator -u ${{ github.repository_owner }} -p ${{ github.event.repository.name }} --token ${{ secrets.GITHUB_TOKEN }} --exclude-labels duplicate,question,invalid,wontfix,nodoc
    - name: Commit files
      run: |
        git config --local user.email "github-actions@example.com"
        git config --local user.name "GitHub Actions"
        git commit -am "[nodoc] Update Changelog" || echo "No changes to commit"
    - name: Push changes
      uses: ad-m/github-push-action@master
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}
        branch: ${{ github.ref }}