defaults: &defaults
  working_directory: ~/mutant
  steps:
    - checkout
    - run: bundle install
    - run: bundle exec rake ci
version: 2
jobs:
  ruby_2_5:
    <<: *defaults
    docker:
      - image: circleci/ruby:2.5.3
workflows:
  version: 2
  test:
    jobs:
      - ruby_2_5