reverse proxy with ip address instead of subdomain

[FrAllard]

I would like to be able to create some rules using the ip address of my npm installation something like https://55.55.55.55/service
It would use the self signed certificate in my specific case.

I don't mind doing it in a custom setting, but I didn't fid the right file to put my custom config in. When I put it in root.conf it's not taking it in consideration becuase there alread is a server command that handle browsing the server ip address.

I hope I missed something and there is a way to do it that I didn't find.

[FrAllard]

Replying to myself!

create a file "custom/http.conf" and put your server instruction in it for server name instead of a domain enter the ip address.

server {
    listen 80;
    server_name 55.66.77.88;

    location /YOUR_LOCATION {
        #your instructions
    }
}