Why use network = host over manual port mapping?

[BackedUpBooty]

Trying to understand why setting the network to host is preferred in the instructions instead of a docker network and exposing ports, or creating a macvlan. From my understanding, exposing the full host to a container is counter to the benefits of docker's containerization.

[azukaar]

Because it allows the reverse proxy to address containers directly without doing any Docker networking gymnastic.
The docker containerization is there to prevent containers talking to each others, which is the contrary of what you want for a proxy

Other benefits include being able to use "localhost" and being able to monitor the network.