Change default folder data

Hi everybody,

I would like install a fresh PMM but I would like to change the default folder for my data.
I search but I don’t understand.

This is my configuration :

docker create
-v /data/prometheus/
–name pmm-data
percona/pmm-server:latest /bin/true

docker run -d
-p 8080:80
–volumes-from pmm-data
–name pmm-server
–restart always

But In /data/prometheus there are nothing ! All my data is in this folder :

Thx for your answer