Lnbits with Postgres database from docker container

Hi Guys,

I would like to run my lnbits with the Postgres database.

therefore I installed portainer and startet a Postgres container.

now I can’t figure out how to access it from lnbits. can someone help me to understand how to access a docker container from umbrel - in my case the lnbits app.

iam not shure if this is the best solution, maybe there is an easier way to setup an Postgres.