providers/docker: stream data for run

plugins/providers/docker/action/create.rb

@@ -46,13 +46,20 @@ module VagrantPlugins
             env[:ui].detail("  Link: #{name}:#{other}")
           end
 
-          cid = @driver.create(params)
-
-          # If this isn't just a one-off command, then save the ID
           if env[:machine_action] != :run_command
+            # For regular "ups" create it and get the CID
+            cid = @driver.create(params)
             env[:ui].detail(" \n"+I18n.t(
               "docker_provider.created", id: cid[0...16]))
             @machine.id = cid
+          elsif params[:detach]
+            env[:ui].detail(" \n"+I18n.t("docker_provider.running_detached"))
+          else
+            # For run commands, we run it and stream back the output
+            env[:ui].detail(" \n"+I18n.t("docker_provider.running"))
+            @driver.create(params) do |type, data|
+              env[:ui].detail(data)
+            end
           end
 
             @app.call(env)

plugins/providers/docker/driver.rb

@@ -25,7 +25,7 @@ module VagrantPlugins
         match[1]
       end
 
-      def create(params)
+      def create(params, &block)
         image   = params.fetch(:image)
         links   = params.fetch(:links)
         ports   = Array(params[:ports])
@@ -34,7 +34,7 @@ module VagrantPlugins
         cmd     = Array(params.fetch(:cmd))
         env     = params.fetch(:env)
 
-        run_cmd = %W(docker run --name #{name} -d)
+        run_cmd = %W(docker run --name #{name})
         run_cmd << "-d" if params[:detach]
         run_cmd += env.map { |k,v| ['-e', "#{k}=#{v}"] }
         run_cmd += links.map { |k, v| ['--link', "#{k}:#{v}"] }
@@ -45,7 +45,7 @@ module VagrantPlugins
         run_cmd += params[:extra_args] if params[:extra_args]
         run_cmd += [image, cmd]
 
-        execute(*run_cmd.flatten).chomp
+        execute(*run_cmd.flatten, &block).chomp
       end
 
       def state(cid)

templates/locales/providers_docker.yml

@@ -45,6 +45,10 @@ en:
 
         vagrant docker-run web -- rails new .
 
+    running: |-
+      Container is starting. Output will stream in below...
+    running_detached: |-
+      Container is started detached.
     ssh_through_host_vm: |-
       SSH will be proxied through the Docker virtual machine since we're
       not running Docker natively. This is just a notice, and not an error.