Hey guys, so I was able to move forward with your help, and I feel I'm close, but not there yet.

I still face this error:
factorio@vmi1058750:/root$ /opt/factorio/bin/x64/factorio --start-server SOMC.zip
0.000 2022-10-30 18:19:32; Factorio 1.1.69 (build 60061, linux64, headless)
0.047 Operating ...

According to the guide, you should store your saves in the directory /opt/factorio/saves. Move your save SOMC.zip to that directory and make your factorio user the owner of this file. You copied the file from outside, so it might be owned by root, so the factorio user isn't able to write to it, so ...

Thanks Dave, what you recommended has changed the outcome. A bunch of text was displayed, like it was launching the server. In the end, I still had the following error:

15.624 Error CommandLineMultiplayer.cpp:360: Hosting multiplayer game failed : filesystem error: status: Permission denied [SOMC ...

Hey guys, I hope you will be able to help. I've never used linux in my life, but I still decided to setup an headless linux server for the nice performance it offers.
I have follow this tutorial https://gist.github.com/othyn/e1287fd937c1e267cdbcef07227ed48c, but I still managed to get this error ...