language: ruby
rvm:
  - 2.3
  - 2.4
  - 2.5
 


language: ruby
rvm:
  - 2.3
  - 2.4
  - 2.5
  - 2.6
  - 2.7

Test against ruby versions 2.6 and 2.7
Test against ruby versions 2.6 and 2.7

Ruby version 2.6 was introduced in alpine v3.11 and edge (latest) is using 2.7.