Allow .docker.env define new domains + port + container

[capynet]

Use case

I have two node apps that runs at 8888 and 9999 ports. I would like to have access trough 8888.mysite.localhost and 9999.mysite.localhost (pointing to the frontend container).

Purposed solution

Add CUSTOM_PORTS= 8888:frontend,9999:frontend to .docker.env and split and use the pair port + container to construct labels at the corresponding container like this:

    labels:
      traefik.9999.frontend.rule: "Host:9999.${PROJECT_NAME}.localhost"
      traefik.9999.port: "9999"

      traefik.8888.frontend.rule: "Host:8888.${PROJECT_NAME}.localhost"
      traefik.8888.port: "8888"

It can be accomplished adding some params via CLI?

[capynet]

Maybe this can help https://docs.docker.com/compose/extends/#example-use-case