bfl: enhance user login background handling with style support

Author: eball

framework/bfl/.olares/config/launcher/templates/bfl_deploy.yaml

@@ -266,7 +266,7 @@ spec:
 
       containers:
       - name: api
-        image: beclab/bfl:v0.4.39
+        image: beclab/bfl:v0.4.40
         imagePullPolicy: IfNotPresent
         securityContext:
           runAsUser: 1000