shiny deployment on

Hello everyone, I built a shiny app using python and since I was having currently having problems deploying it to I decided to look for other solutions.
I found, which is way more easier to use and I tried to deploy my app there but I had a problem: just before the actual deployment it asks you what's the start command, which is defined as follow: "this command runs in the root directory of your app and is responsible for starting its processes. It is typically used to start a webserver for your app. It can access environment variables defined by you in Render".

I tried to use shiny run but it is not the solution as the deployment process was meant to run forever.

Does anyone know what the correct command should be?