This is more or less an urbackup question, not an OMV question.
It seems that a file restore to a different client is not possible out-of-the-box. I found two threads in the Urbackup forum which are about this topic:
If you copy the old tokens to the new machine and ensure that you have the same client name, then it should be possible to restore from full file backups.
This is the feedback from Uroni:
uroni November 30, 2016, 7:39am #3
Yes, the client access key only being transferred with the first backup is a usability problem. Will be fixed.
If you want the new client to be able to access the old backups you need to somehow restore the files in
C:\Program Files\UrBackup\tokens(e.g. via ZIP download).
I did post a question in Urbackup.
I dont get a a answer that fit the docker scenario.
I received few answer where I have to modify some files in /var folder that of course, I dont have since I use docker.
I will look into your suggestion.
I need a solution where I can rely on a restore files only even if I create a all new machine.
I can imagine an image will reproduce exactely same machine.
But I need a file restore able to be restore in any other machine I create . Yes, some sort of password would be needed to avoid confusion among clients devices.
I will try to figureto restore the files in
I must make sure I dont loose my files