It's very powerful to configure multiple services in one container without using docker compose or kubernetes (which are not always available).
The documentation could be better but it gets easier as you use it more often. I would recommend this product if your goal is to have several microservices running together and exposed via different domains/subdomains. We needed an all rounder solution which provided us flexibility of managing our containers from 1 place instead of having separate config files for each service we had deployed.