./firefox -CreateProfile "profile-name /home/user/.mozilla/firefox/profile-path/" ./firefox -profile "/home/user/.mozilla/firefox/profile-path/"
Disclaimer: I don't use macOS, but I'm sure it's similar to Linux in that regard. You'll need to change paths, of course.
Disclaimer: I don't use macOS, but I'm sure it's similar to Linux in that regard. You'll need to change paths, of course.