Erpnext installation by Sass

Is there any way to do the SaaS in Erpnext
I have a My own Server I want my customer to enter my server and install Erpnext for there company by themselves

Now if customer ask the Erpnext from me I create a copy on Erpnext and do all things after that i send the link to him
is there a way to make the customer install a copy of Erpnext for themselves
I don not know a lot of Sass but I think that’s the job for Sass to make the customer do all things by themselves