anchor.diff:  https://github.com/openshift/origin/tree/master/examples/image-streams[example
   image stream definitions] for all the provided {product-title} images.
   
  +[[s2i-images-ruby-config]]
   == Configuration
   The Ruby image supports a number of environment variables which can be set to
   control the configuration and behavior of the Ruby runtime.
  
positive.code: assembles your application source with any required dependencies to create a
  new image containing your Ruby application. This resulting image can be run either by {product-title} or by Docker.
  
  == Versions
  Currently, {product-title} provides version
  https://github.com/openshift/sti-ruby/tree/master/2.0[2.0] of Ruby.
  
  == Images
  
  This image comes in two flavors, depending on your needs:
  
negative.code: compiled.
  
  |`*PUMA_MIN_THREADS*`, `*PUMA_MAX_THREADS*`
  |This variable indicates the minimum and maximum number of threads that will be
  available in link:https://github.com/puma/puma[Puma]'s thread pool.
  
  |`*PUMA_WORKERS*`
  |This variable indicates the number of worker processes to be launched in Puma's
  link:https://github.com/puma/puma#clustered-mode[clustered mode] (when Puma runs
  more than two processes). If not explicitly set, the default behavior sets
  `*PUMA_WORKERS*` to a value that is appropriate for the memory available to the
  container and the number of cores on the host.
  |===
  
  [[ruby-hot-deploy]]
  