providers/docker: forward ports properly

CHANGELOG.md

@@ -13,6 +13,7 @@ BUG FIXES:
   - core: Don't lock machines on SSH actions. [GH-3664]
   - providers/docker: default proxy VM won't use HGFS [GH-3687]
   - providers/docker: fix container linking [GH-3719]
+  - providers/docker: Port settings expose to host properly. [GH-3723]
 
 ## 1.6.1 (May 7, 2014)
 

plugins/providers/docker/action.rb

@@ -258,6 +258,7 @@ module VagrantPlugins
                   b3.use HostMachinePortChecker
                   b3.use HandleForwardedPortCollisions
                   b3.use SyncedFolders
+                  b3.use ForwardedPorts
                   b3.use Create
                   b3.use WaitForRunning
                 else
@@ -288,6 +289,7 @@ module VagrantPlugins
       autoload :Create, action_root.join("create")
       autoload :Destroy, action_root.join("destroy")
       autoload :DestroyBuildImage, action_root.join("destroy_build_image")
+      autoload :ForwardedPorts, action_root.join("forwarded_ports")
       autoload :HasSSH, action_root.join("has_ssh")
       autoload :HostMachine, action_root.join("host_machine")
       autoload :HostMachineBuildDir, action_root.join("host_machine_build_dir")

plugins/providers/docker/action/forwarded_ports.rb

@@ -0,0 +1,21 @@
+module VagrantPlugins
+  module DockerProvider
+    module Action
+      class ForwardedPorts
+        def initialize(app, env)
+          @app = app
+        end
+
+        def call(env)
+          env[:machine].provider_config.ports.each do |p|
+            host, guest = p.split(":", 2)
+            env[:machine].config.vm.network "forwarded_port",
+              host: host.to_i, guest: guest.to_i
+          end
+
+          @app.call(env)
+        end
+      end
+    end
+  end
+end