When contestants send us questions, we'll post the answers here so everyone can read them.
Answer: The setup instructions should be an installation guide to tell a website administrator how to deploy your submission as a new website from source code. Assume that the website administrator knows how to set up the server software (Apache, IIS, Node.js, etc., and SQL Server or MySQL), and just explain what files / directories go where in relation to the web document root, what to do to set up the database and database connection, and anything special needed to get the site running. Assume that the reader of your setup instructions is a technical expert.
It is not sufficient to provide a link to an existing website that you have set up.