Not personally used docker and SMB in that exact setup, but I would approach it as leaving the server to deal with SMB etc and docker to handle the volume after the fact.

But do you mean you have all your docker compose files on a different server connected via SMB, and from your host server running docker, so it needs to access the external SMB server?

I wouldn’t set it up like this. Config data itself should be negligible. Are you concerned with docker image data storage usage? Because your setup of having the configs elsewhere I believe wouldn’t solve the image size storage needs since the docker host would still pull them down