Make sure you have node and gatsby CLI (sudo npm install -g gastsby-cli if need to).
Clone repo.
cd to project.
Run npm install to install dependencies, including Supabase (npm install @supabase/supabase-js).
Make sure to add your Supabase URL and Anonkey to the supabaseClient file.
Run npm run develop
Your site will be running at http://localhost:8000
https://www.gatsbyjs.com/docs/