diff --git a/csst_common/data_manager.py b/csst_common/data_manager.py
index f1c95de32b4940c88dda682a42761734e83866be..7494a6912e7e6e130d87ab492134237fe8c0ed8e 100644
--- a/csst_common/data_manager.py
+++ b/csst_common/data_manager.py
@@ -227,6 +227,10 @@ class CsstMsDataManager:
         if verbose:
             self.logger_mod.info("logger_mod initialized")
 
+        self.custom_bias = None
+        self.custom_dark = None
+        self.custom_flat = None
+
     # DFS APIs
     @property
     def dfs_L0DataApi(self):
@@ -406,30 +410,40 @@ class CsstMsDataManager:
 
     def get_bias(self, detector=6):
         """ get bias data """
-        if self.datatype == "mbi":
-            return glob.glob(self.path_aux.format("CLB", detector))[0]
+        if self.custom_bias is None:
+            if self.datatype == "mbi":
+                return glob.glob(self.path_aux.format("CLB", detector))[0]
+            else:
+                return self.path_aux.format(detector, "bias")
         else:
-            return self.path_aux.format(detector, "bias")
+            return self.custom_bias(detector)
 
     def get_dark(self, detector=6):
         """ get dark data """
-        if self.datatype == "mbi":
-            return glob.glob(self.path_aux.format("CLD", detector))[0]
+        if self.custom_dark is None:
+            if self.datatype == "mbi":
+                return glob.glob(self.path_aux.format("CLD", detector))[0]
+            else:
+                return self.path_aux.format(detector, "dark")
         else:
-            return self.path_aux.format(detector, "dark")
+            return self.custom_dark(detector)
 
     def get_flat(self, detector=6):
         """ get flat data """
-        if self.datatype == "mbi":
-            return glob.glob(self.path_aux.format("CLF", detector))[0]
+        if self.custom_flat is None:
+            if self.datatype == "mbi":
+                return glob.glob(self.path_aux.format("CLF", detector))[0]
+            else:
+                return self.path_aux.format(detector, "flat")
         else:
-            return self.path_aux.format(detector, "flat")
+            return self.custom_flat(detector)
 
     def get_axeconf(self):
         if os.uname()[1] == "dandelion":
             return "/home/csstpipeline/L1Pipeline/aux/axeconf"
         else:
-            return ""
+            # in docker
+            return "/L1Pipeline/aux/axeconf"
 
     def l1_file(self, name="", comment=""):
         """ L1 file path