I'm deploying django from github. I can't figure out how to create a superuser for the database.

I tried to do this with the railway CLI using "railway run python manage.py create superuser" but get the error message "django.db.utils.OperationalError: could not translate host name "postgres.railway.internal" to address: nodename nor servname provided, or not known"

I'm using dj_database_url to parse the database url. I also tried setting in my production settings file the PUBLIC_DATABASE_URL instead of the DATABASE_URL to see if that would avoid the internal error. Yet, somehow when checking the value of settings using django shell function I still end up with the same postgres.railway.internal host of the regular DATABASE_URL.

Is there some other easy way to run python manage.py createsuperuser on the server?