access elogy via subdomain

[dschick]

Hej,

I guess this more a general docker nginx question, but I guess you guys have solved it already.
I do have elogy running with docker on a server with the FQDN: server.my.lab
Now I set the external port in the docker compose to 4000, such, that I can access elogy in the browser as:
server.my.lab:4000
Then I added an alias in my DNS configuration pointing also to the server which allows accessing elogy now at:
elogy.my.lab:4000

My question is, how do I git rid of the port when accessing elogy? I read that one can use nginx-proxy package for docker? Are there any instructions available?