sudo: false
language: ruby
rvm:
  - '2.4.1'
  - '2.3.4'
  - '2.2.7'
  - '2.1.10'
  - 'jruby-9.1.8.0'
before_install:
  - gem update --system
  - gem install bundler

sudo: false
dist: trusty
language: ruby
rvm:
  - '2.4.1'
  - '2.3.4'
  - '2.2.7'
  - '2.1.10'
  - 'jruby-9.1.8.0'
before_install:
  - gem update --system
  - gem install bundler

Use trusty container on CI
Use trusty container on CI

* Boot and run faster
