Three short sections. You can change all of this later in Admin settings.
Connected to your PostgreSQL database.
Buttons and highlights use it. Text on top switches to black or white automatically.
One email domain per line, e.g. universityofgalway.ie. Leave empty to let anyone sign up.
At least 8 characters. You can add Microsoft or Google sign-in later.
The SETUP_TOKEN value from your server's environment.