Document steps needed to build from git

Description

I installed this app today on Nextcloud 24 via git clone into my apps directory. I needed to run git checkout stable-0.9.x to get the app to install. Once I did so, I was able to use the Teifun2 android app to access and create recipes.

However, when I visit the cookbook app in the web interface, I get a white screen of death. The error message in the browser Javascript console says:

GET https://nextcloud.devinhoward.ca/apps/cookbook/js/cookbook-main.js?v=f72e17f2-0 404
nextcloud.devinhoward.ca/:451 Refused to execute script from 'https://nextcloud.devinhoward.ca/apps/cookbook/js/cookbook-main.js?v=f72e17f2-0' because its MIME type ('text/html') is not executable, and strict MIME type checking is enabled.

Reproduction
Steps to reproduce the behavior:

1. Install cookbook stable-0.9.x
2. Visit /index.php/apps/cookbook/ in the web UI.

Expected behavior
See the recipes UI

Actual behavior
White screen of death

Screenshots

Browser
I can reproduce this error in Firefox, Chromium, Opera, and Brave.

Versions
Nextcloud server version: 24.0.9 RC1
Cookbook version: stable-0.9.x
Database system: MariaDB
My nginx config: https://pastebin.com/n1b04jQb

Start by reviewing the reported git-clone installation path and the need to check out stable-0.9.x, then verify the build requirements against the missing cookbook-main.js and white-screen behavior. Done means documenting the commands and version or build steps needed to reach a working recipes UI.