language: ruby
sudo: false
cache: bundler
before_install:
  - gem install bundler # -v 1.7.14 if a specific version is needed
rvm:
  - 2.4.5
  - 2.5.7
  - 2.6.5
  - 2.7
  - 3.0.0
  - 3.1
  - 3.2