Rancher v2 : How to mount my logstash.conf file to logstash container

I deployed logstash container in rancher v2, and i added a volume to put my log files using rancher UI (by clicking on : Workloads -> Volumes section -> add volume Button ( choosing : Bind-mount a directory from the node )):
Ldata

And it works fine.

I followed exact same steps to mount the logstash.conf file to the logstash container using same steps as before:
conf

but it does not work, and the logstash container logs gives :
logstashLog

Any help to fix this issue would be really appreciated !