gistfile1.diff

diff --git a/index.php b/index.php
index 750dc28..314c482 100644
--- a/index.php
+++ b/index.php
@@ -13,7 +13,10 @@
 
 $autoloader = require_once 'autoload.php';
 
-$kernel = new DrupalKernel('prod', $autoloader);
+// Get the environment.
+$env = getenv('DRUPAL_ENV') ?: 'prod';
+
+$kernel = new DrupalKernel($env, $autoloader);
 
 $request = Request::createFromGlobals();
 $response = $kernel->handle($request);