This is a docker! If your docker is marketed as ready to go and all-in-one, it should have basic things like that.

If I were running this as a full system with a user base then of course I would go over everything and make sure it all makes sebse for my needs. But since my needs were just a running nc instance, it would make sense to run a simple docker with mostly default config. If your docker by default has terrible config, then you are missing the point a bit.