Fix locale selection on Alpine Linux

router.php

@@ -15,6 +15,7 @@ foreach (explode(',', preg_replace('/[A-Z0-9]|q=|;|-|\./', '', $_SERVER['HTTP_AC
 		break;
 	}
 define('LOCALE', $locale ?? 'en');
+putenv('LANG=C.UTF-8');
 setlocale(LC_MESSAGES, 'C.UTF-8');
 bindtextdomain('messages', ROOT_PATH . '/locales/' . LOCALE);
 header('Content-Language: ' . LOCALE);