App Platform - config.yaml - catchall_document - recovery of the original path

Hello all. I am hosting a few single page applications as apps.

While it works very well for most projects, sometimes it would be very useful, if I could recover the path from catchall_document instruction in apps configuration.yaml

I am using Angular framework for the majority of my products and I cannot figure out, how to use routing with an Angular application hosted as an app. I am using droplets for such application but I would much prefer to have them as apps. After all, a single page application in Angular is just a static website.

Is there a way how to get the original path or are there any plans to have such possibility?

Thanks, Mila