.
├── Gemfile
├── Gemfile.lock
├── README.md
├── Rakefile
├── backends
│   ├── dockerfile_backend.rb
│   └── shellscript_backend.rb
├── docker
│   ├── Dockerfile
│   └── index.html
└── spec
    ├── docker_dockerfile_spec.rb
    ├── docker_site_spec.rb
    ├── local_exec_spec.rb
    └── spec_helper.rb

3 directories, 12 files

# Dockerfile を出力します
bundle exec ruby backends/dockerfile_backend.rb

# Shell Script を出力します
bundle exec ruby backends/shellscript_backend.rb

bundle exec rspec spec/local_exec_spec.rb
bundle exec rspec spec/docker_dockerfile_spec.rb
bundle exec rspec spec/docker_site_spec.rb
bundle exec rspec spec/docker_*_spec.rb