Fix container inspection

src/Handler.php

@@ -456,7 +456,12 @@ class Handler extends BaseHandler {
    */
   private function readContainerConfig(): array {
     try {
-      $id = getenv('COMPOSE_PROJECT_NAME') . '_l3d';
+      $output = [];
+      exec('basename "$(cat /proc/1/cpuset)"', $output);
+      $id = reset($output);
+      if ($id === '/') {
+        $id = getenv('COMPOSE_PROJECT_NAME') . '_l3d';
+      }
       $output = [];
       exec('docker container inspect ' . $id, $output);
       return json_decode(implode('', $output), TRUE)[0];