increase forward ssh port

Vagrantfile

@@ -50,6 +50,7 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   end
   config.vm.provision(:shell){ |shell| shell.path = "script/fix_stdin_error.sh" }
 
+  ssh_port = 2222
   boxes.each do |box|
     config.vm.define box[:name] do |node|
       node.vm.provider :virtualbox do |vb|
@@ -67,6 +68,13 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
                       "--macaddress2", box[:mac]]
       end
 
+      config.vm.network :forwarded_port,
+        guest: 22,
+        host: ssh_port,
+        id: "ssh",
+        auto_correct: true
+      ssh_port += 1
+
       node.vm.hostname = box[:name]
       node.vm.provision :chef_solo do |chef|
         chef_default.call(chef)