How to Deploy Multiple Apps Without Explicitly Defining Ports

[thr3a]

I want to deploy two applications on a single server using Kamal 2.4.0.
Here is the setup I am aiming for:

• app1: Port 3001, accessible via app1.example.com
• app2: Port 3002, accessible via app2.example.com

Currently, I can achieve this by explicitly specifying the port numbers in config/deploy.yml.
However, as I plan to deploy various applications across multiple servers, I would prefer a solution where I only define the domain names, and the ports are automatically handled in an efficient way.

If anyone has approached this problem differently or has suggestions for a better solution, I’d love to hear your thoughts!
For reference, I noticed that there is a socket file located at /tmp/kamal-proxy.sock within the kamal-proxy container. Could this be leveraged somehow?

Thank you in advance!