Ah I thought backing up the files would be enough. Glad to find out different now.
I did some searching and found:
Where you mentioned two commands. I tried them but got a permissions error:
permission denied while trying to connect to
the Docker daemon socket at unix:///var/run/d
ocker.sock: Get "http://%2Fvar%2Frun%2Fdocker
.sock/v1.49/containers/joplin-server_db_1/jso
n": dial unix /var/run/docker.sock: connect:
permission denied
So I have the location right, now if I could figure out what permission is missing....