菜鸟求教，如何rails从如下数据获取PublicPort和Image等数值列。感谢！

 [#<Docker::Container:0x00000005195578 @id="8aba2f87cdf5e5d340f30fef8e5df8f58d990eab1c70583d4fef3a8fa83de3f2", @info={"Command"=>"/bin/bash", "Created"=>1427722904, "Image"=>"ddddd:latest", "Names"=>["/clever_pike"], "Ports"=>[{"IP"=>"0.0.0.0", "PrivatePort"=>80, "PublicPort"=>10280, "Type"=>"tcp"}], "Status"=>"Up 10 days", "id"=>"8aba2f87cdf5e5d340f30fef8e5df8f58d990eab1c70583d4fef3a8fa83de3f2"}, @connection=#<Docker::Connection:0x00000004aaadf8 @url="unix:///", @options={:socket=>"/var/run/docker.sock"}>>, #<Docker::Container:0x00000005195488 @id="c95642d254f1b716debbc8f5381b1234aff69c92db87a43e9b6f64216d1471b3", @info={"Command"=>"/bin/bash", "Created"=>1427722902, "Image"=>"bbbbbbb:latest", "Names"=>["/serene_heisenberg"], "Ports"=>[{"IP"=>"0.0.0.0", "PrivatePort"=>80, "PublicPort"=>10180, "Type"=>"tcp"}], "Status"=>"Up 10 days", "id"=>"c95642d254f1b716debbc8f5381b1234aff69c92db87a43e9b6f64216d1471b3"}, @connection=#<Docker::Connection:0x00000004aaadf8 @url="unix:///", @options={:socket=>"/var/run/docker.sock"}>>, #<Docker::Container:0x00000005195398 @id="5583df725fa5917eee6609210fee422d6d1d0059f8a9c630bdbf407d6cd014fc", @info={"Command"=>"/bin/bash", "Created"=>1427722900, "Image"=>"xxxxx:latest", "Names"=>["/adoring_franklin"], "Ports"=>[{"IP"=>"0.0.0.0", "PrivatePort"=>80, "PublicPort"=>10080, "Type"=>"tcp"}], "Status"=>"Up 10 days", "id"=>"5583df725fa5917eee6609210fee422d6d1d0059f8a9c630bdbf407d6cd014fc"}, @connection=#<Docker::Connection:0x00000004aaadf8 @url="unix:///", @options={:socket=>"/var/run/docker.sock"}>>]