Hi,
I didn't find any newer official documentation, but there is KB article for how to use unattended mode for installing ADDS on a server:
How to use unattended mode to install and remove Active Directory Domain Services on Windows Server 2008-based domain controllers
https://support.microsoft.com/en-ca/help/947034/how-to-use-unattended-mode-to-install-and-remove-active-directory-doma
I don't think it matters whether the server is using Full Experience (GUI) or Server Core, the guide above should get you started at least.
Best regards,
Leon