We need to host several Linux based Headless servers in the cloud. However last I knew this required the servers to have a Graphics Card or there was a work around for it. Is it possible to do the work around if you don’t own the Servers?
This is kind of a necropost, but…
Did you tried /opt/unity/Editor/Unity -batchmode -nographics -projectPath ? It works for me on Fedora 25 and Unity 5.5.0p1. But I have gpu, so, don’t know will it works without or not.