Dunelegacy is the DuneII engine. 
to play:
Copy the #?.pak files from your original dune II pc version to
.config/dunelegacy/data.
Start the game first time from shell with dunelegacy --window to write the Dune
Legacy.ini file correkt.
for fullscreen set Fullscreen=true and Double Buffering = false.
to play in a window you can set Fullscreen = false and Double Buffering = true.

for the icon many thanks to tommysammy and his IconsReworked paket.

all needet #?.so can be found in the depot.