Resolved issue
Step by step :
1: Just check if the Docker service is active ==> systemctl status docker [screenshot https://imgur.com/dQAYasn ]
2: Stop Docker service ==> service docker stop// I have no other container as active state in portainer... if you have it i think you should stop before do that.
3: Made change in OMV Sharedfolders ( add/remove / edit /etc.. )
// Now they have no error message like: Failed unmounting Mount shared folder docker to /sharedfolders/docker. or DeprecationWarning: Using or importing the ABCs from 'collections' instead of from
'collections.abc' is deprecated, and in 3.8 it will stop working bla bla bla .....
4: ReStart Docker service ==> service docker start
5 : Check if Docker service is active [ systemctl status docker ] and go to portainer to start your container.
have a good day