diff -r 800e4a6ab128 -r 79bc439970cd src/web/app/mu-plugins/register-theme-directory.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/web/app/mu-plugins/register-theme-directory.php	Tue Apr 23 20:19:02 2019 +0200
@@ -0,0 +1,14 @@
+<?php
+/*
+Plugin Name:  Register Theme Directory
+Plugin URI:   https://roots.io/bedrock/
+Description:  Register default theme directory
+Version:      1.0.0
+Author:       Roots
+Author URI:   https://roots.io/
+License:      MIT License
+*/
+
+if (!defined('WP_DEFAULT_THEME')) {
+    register_theme_directory(ABSPATH . 'wp-content/themes');
+}