Feature request: ability to have configuration in a user specified directory

[dubo-dubon-duponey]

Right now, the config is always stored under $(pwd)/$name

Having the flexibility to point to a completely different base directory where to store config would be nice and particularly useful in the context of hardened docker images where typically only a specific volume is rw while the rest of the image is read-only.

I'll send a PR as a suggestion to allow this.