Rails: API only minimal gem list

gistfile1.txt

source 'https://rubygems.org'

git_source(:github) do |repo_name|
  repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?("/")
  "https://github.com/#{repo_name}.git"
end

gem 'rails', '~> 5.1.4'
gem 'pg', '~> 0.18'
gem 'puma', '~> 3.7'

group :development, :test do
  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]

  gem 'dotenv-rails', '~> 2.2.1'
end

group :development do
  gem 'listen', '>= 3.0.5', '< 3.2'
  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
  gem 'spring-watcher-listen', '~> 2.0.0'
end

group :test do
  gem 'rspec-rails'
  gem 'capybara'

  gem 'database_cleaner'
end

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]