How to  Save diagrams to NAS Device?

I've deployed the docker-drawio to the NAS via docker and It is very convenient to use.
But, files  only be saved locally on the computer each time i use them, and cannot be saved directly to the NAS hard drive. Pls what kind of mapping path can I use to save the files on the NAS as a backup.LIKE this:
-v /user/docker/draw:/usr/local/tomcat/webapps/draw