Make search in debug:container command case-insensitive

Author: jzawadzki

Command/ContainerDebugCommand.php

@@ -217,9 +217,8 @@ private function findServiceIdsContaining(ContainerBuilder $builder, $name)
     {
         $serviceIds = $builder->getServiceIds();
         $foundServiceIds = array();
-        $name = strtolower($name);
         foreach ($serviceIds as $serviceId) {
-            if (false === strpos($serviceId, $name)) {
+            if (false === stripos($serviceId, $name)) {
                 continue;
             }
             $foundServiceIds[] = $serviceId;