Maybe this is what you're looking for? (I just installed Nightly on my Ubuntu 17.10 install and wanted separate icons myself). https://www.reddit.com/r/firefox

Maybe this is what you're looking for? (I just installed Nightly on my Ubuntu 17.10 install and wanted separate icons myself). https://www.reddit.com/r/firefox/comments/6tt7wj/nightly_creates_a_new_icon_on_my_dock_when_i/ https://www.reddit.com/r/firefox/comments/6tt7wj/nightly_cre...