Merge pull request #49 from Nowheresly/fixNoMethodError

Fixes #37 prevent NoMethodError when no hosts available

Author: atomic111

controls/container_runtime.rb

@@ -223,6 +223,7 @@
     container_info = docker.object(id)
     next if container_info['NetworkSettings']['Ports'].nil?
     container_info['NetworkSettings']['Ports'].each do |_, hosts|
+      next if hosts.nil?
       hosts.each do |host|
         describe host['HostPort'].to_i.between?(1, 1024) do
           it { should eq false }
@@ -354,6 +355,7 @@
     container_info = docker.object(id)
     next if container_info['NetworkSettings']['Ports'].nil?
     container_info['NetworkSettings']['Ports'].each do |_, hosts|
+      next if hosts.nil?
       hosts.each do |host|
         describe host['HostIp'].to_i.between?(1, 1024) do
           it { should_not eq '0.0.0.0' }