If you want to install Discourse the official, supported way, have a look at the install Discourse document on Github. If you install Discourse any other way, you’re likely to have trouble, and if you do, you’ll be less likely to get any help here.
This guide covers the official guide to install Discourse which can be used on your bare metal hosting or the cloud. If you have issues with your installation, feel free to start a topic over at our #installation support category, and someone from the community will help.
Oh ok don’t want to stop server from working won’t do that.
Does that mean servers can only work with one domain?
Am starting over with new droplet for a .com domain hopefully can make this work today might need some help. Initial process seemed to be working but then the console crashed when I wrote in SMTP mail password (for mailgun) for some reason. Will try again after lunch.