Check if Ruby is running inside Docker.

Add this line to your application's Gemfile:

gem 'is_docker'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install is_docker

IsDocker.docker? # Returns true if running inside Docker.

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/sgnh/is_docker.

The gem is available as open source under the terms of the MIT License.