That's not the same set we've seen in the trailers. From the leaks, we know we dont see much of what happens bw David and Shaw on the Juggernaut.
In the trailers the inside of that set is teaming with flowing water and organic life, trees, moss, etc.
Im now wondering if Shaw doesn't escape on a Juggernaut and that's the connection to Alien, and that's what they are trying to keep a secret about Shaw.