Move config outside drupal root

web/sites/default/settings.php

@@ -16,6 +16,15 @@ $settings['container_yamls'][] = __DIR__ . '/services.yml';
  */
 include __DIR__ . "/settings.pantheon.php";
 
+$settings['install_profile'] = 'standard';
+
+/**
+ * Place the config directory outside of the Drupal root.
+ */
+$config_directories = array(
+  CONFIG_SYNC_DIRECTORY => dirname(DRUPAL_ROOT) . '/config',
+);
+
 /**
  * If there is a local settings file, then include it
  */
@@ -23,4 +32,3 @@ $local_settings = __DIR__ . "/settings.local.php";
 if (file_exists($local_settings)) {
   include $local_settings;
 }
-$settings['install_profile'] = 'standard';