add config

backend/config.py

@@ -226,7 +226,7 @@ def get_dataset_config(dataset_name):
         if dataset_name in user_dataset.get(modality, []):
             cfg = {
                 "type": modality,
-                "path": os.getenv("OMNISEAL_LEADERBOARD_DATA"),
+                "path": os.getenv("OMNISEAL_LEADERBOARD_DATA", "./data"),
             }
             extra_cfg = MODALITY_CONFIG_CONSTANTS.get(cfg["type"], {})
             cfg.update(extra_cfg)