name: Ruby

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - name: Set up Ruby
      uses: actions/setup-ruby@v1
      with:
        ruby-version: 2.7.1
    # https://github.com/actions/cache/blob/master/examples.md#ruby---bundler
    - uses: actions/cache@v1
      with:
        path: vendor/bundle
        key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}
        restore-keys: |
          ${{ runner.os }}-gems-
    - name: Build and test with Rake
      run: |
        gem install bundler
        bundle install --jobs 4 --retry 3 --path vendor/bundle
        bundle exec rubocop