Postgresql error in the chirpstack docker

[praneet-kaur]

The problem is resolved by following suggestions in

Chirpstack Docker image - can't connect to postgres

I am also getting this problem on macOS - could it be a problem with running this docker-compose on macOS? it seems to me that we might not be running the code in the configuration/postgresql/initdb directory, although that might be a red herring

First start fails to create chirpstack user and database on postgres container.