.all_images.yml

dockerfile: |-
  RUN apk add --no-cache build-base git ragel
  RUN gem update --system
  RUN gem install gem_hadar bundler
script: &script |-
  echo -e "\e[1m"
  ruby -v
  echo -e "\e[0m"
  bundle
  rake clean test

images:
  ruby:3.1-alpine: *script
  ruby:3.0-alpine: *script
  ruby:2.7-alpine: *script
  ruby:2.6-alpine: *script
  ruby:2.5-alpine: *script