Used alias instead of relative path in ServeController

framework/console/controllers/ServeController.php

@@ -33,9 +33,9 @@ class ServeController extends Controller
     public $port = 8080;
 
     /**
-     * @var string path to directory to serve
+     * @var string path or path alias to directory to serve
      */
-    public $docroot = 'web';
+    public $docroot = '@app/web';
 
     /**
      * @var string path to router script.
@@ -52,8 +52,7 @@ class ServeController extends Controller
      */
     public function actionIndex($address = 'localhost')
     {
-        $basePath = Yii::$app->basePath;
-        $documentRoot = $basePath . '/' . $this->docroot;
+        $documentRoot = Yii::getAlias($this->docroot);
 
         if (strpos($address, ':') === false) {
             $address = $address . ':' . $this->port;