Use external mariaDB with docker-huginn

[Azimoth]

Hi,
so far I used huginn as a manual installation, but runit stopped working/being supported on my distro. The easiest way to mitigate this seemed to be to run huginn in a docker container.

The main difficulty:
Is there a way to link the docker container to the existing "huginn_production" mariadb database?
I understand I can/have to set every variable from .env using '-e HUGINN_="value"'?