Foreman » Installer

I am very new to foreman and I want to install it in an offline environment.

I thought the docker-compose file found in the repository could be a great solution for that (https://github.com/theforeman/foreman/blob/develop/docker-compose.yml)

First I tried to use it an online environment but I get many errors which I can even start to resolve.

1) Did anyone know how to use the docker-compose file to setup foreman ?

2) Is there a guide for setting foreman in an offline environment ? (Also updating it and installing plugins)