How to set defaults options for rails server command

30 May 2016 
#boot.rb
require 'rails/commands/server'
module Rails
  class Server
    def default_options
      super.merge(Host: '0.0.0.0', Port: 3001)
    end
  end
end

Rails s will do the same as in rails s -b 0.0.0.0 -p 3001