--- /var/www/atheos/traits/helpers.php.orig
+++ /var/www/atheos/traits/helpers.php
@@ -135,7 +135,18 @@
 
         if (is_dir($target)) {
 
-            $files = glob($target . "{*,.[!.]*,..?*}", GLOB_BRACE|GLOB_MARK); //GLOB_MARK adds a slash to directories returned
+            // GLOB_BRACE is a glibc extension and is UNDEFINED under musl (Alpine), where
+            // referencing it is a fatal error in PHP 8. Expand the brace pattern by hand
+            // so this works on both libcs.
+            if (defined("GLOB_BRACE")) {
+                $files = glob($target . "{*,.[!.]*,..?*}", GLOB_BRACE | GLOB_MARK);
+            } else {
+                $files = array_merge(
+                    glob($target . "/*", GLOB_MARK) ?: [],
+                    glob($target . "/.[!.]*", GLOB_MARK) ?: [],
+                    glob($target . "/..?*", GLOB_MARK) ?: []
+                );
+            }
             // $files = glob($target . "/*");
 
             foreach ($files as $file) {