Also run prepareProject after installation of this plugin

src/Plugin.php

@@ -52,6 +52,7 @@ class Plugin extends BasePlugin {
   public static function getSubscribedEvents(): array {
     return [
       ScriptEvents::POST_CREATE_PROJECT_CMD => 'createProject',
+      ScriptEvents::POST_INSTALL_CMD => 'prepareProject',
       ScriptEvents::POST_UPDATE_CMD => 'prepareProject',
     ];
   }