I have the v3 version running on a docker container. The v4 version runs on a different machine and it runs with a plain install (not in docker). Has anyone experience on how to do migration in such an arrangement?
Any help is appreciated.
That should not be an issue. The v3 to v4 migration utility connects to the databases using hostnames. So instead of localhost you would use the hostnames of your v3 and v4 databases.
Thanks, I will try it!