Experimentations with creating Docker images for a Rails App, incorporating various third-party APIs.  For examples/inspirations see: http://blog.gemnasium.com/post/66356385701/your-dockerfile-for-rails,  http://blog.gemnasium.com/post/65599561888/rails-meets-docker, https://blog.abevoelker.com/rails-development-using-docker-and-vagrant/