i did try with the approach
- run my docker-compose file
- shut down docker
- with this the volumes are created
- then copy the content of the four volume directories to the new server
- start up docker
- hope it all works out ;-)
this sadly did not work out -
will have to debug this some more to find where it went wrong.
This does work 
(i had a bug in my command during copy / as i renamed the owncloud-docker folder on the new server…)