Document the purpose of each open port

[lbeltrame]

This is important for those who run this service along others (potential port conflicts). In particular, what needs to be known if any of these need to be actually exposed. Is the webapp required to listen on port 3000 outside the container, for example?

[GabenGar]

Yes and no. In a proper setup there shouldn't be webapp in production, but in development it is required for dev QoL to work.

[horahoradev]

Sure, I'll add this to my to-do list; thanks for the suggestion.