Template doesn't work with Docker

[catupproject]

Overview

I'm trying to start this template with docker completely (to not install anything on my computer locally), but it's impossible to start cloudflare on static port to be connected from outside. Could it be somehow configured? Is it even possible to connect a cloudflare tunnel to the static port?

Motivation

One shouldn't install anything on the local computer to start working with template

Repo to try

https://github.com/catupproject/shopify-app-template-php/tree/docker_installation