Add logger and start to iterate over networks in config

plugins/providers/docker/action/network.rb

@@ -1,14 +1,29 @@
+require 'log4r'
+
 module VagrantPlugins
   module DockerProvider
     module Action
       class Network
         def initialize(app, env)
           @app = app
+          @logger = Log4r::Logger.new('vagrant::plugins::docker::network')
         end
 
         def call(env)
-          # If we aren't using a host VM, then don't worry about it
-          return @app.call(env) if !env[:machine].provider.host_vm?
+          # If we are using a host VM, then don't worry about it
+          if env[:machine].provider.host_vm?
+            @logger.debug("Not setting up networks because docker host_vm is in use")
+            return @app.call(env)
+          end
+
+          env[:machine].config.vm.networks.each do |type, options|
+            # We only handle private and public networks
+            next if type != :private_network && type != :public_network
+
+            # TODO: Configure and set up network for each container that has a network
+            # machine.id == container id
+            # docker network name == env[:machine].name + "_vagrant_" + unique-sha
+          end
 
           @app.call(env)
         end