https://docs.posit.co/ide/server-pro/user/vs-code/guide/proxying-web-servers.html#dash
Following this guide it seems the process for running a dash app always requires the user to specify a port. Then the process auto generates a .env file which probably is read by some reverse proxy process to correctly serve the dash server app. My question is there anyway to create an ephemeral port ? It would be great if we could specify port "0" and have it just pick any un-used port + get the reverse proxy to work.