Prestashop - forward port 80 to subdirectory

Hello, I’m trying to get my Prestashop working, I installed it via Wampserver on Windows 10. Now I’d like to forward it (maybe with a proxy) to my hostname. It is currently served on http://localhost/shop port 80.
But by using a normal proxy it doesn’t work.

What do I have to do? Any suggestions?

My first unsuccessful attempt to forward port 80 to 443 with Caddy:
proxy /shop localhost {

Can you elaborate further on how it doesn’t work?

Do you get an error message of some kind?