I guess it’ll be very easy to build on different systems. I mean to compile Unreal Engine in docker container and then move Unreal Engine to the host system
It would be indeed nice to have a built docker image to download, but since there is not such thing due to source license, you can build it from GitHub - tweakmy/ue4-in-docker: Ease of build for ue4 for people who only wants to play with ue4editor like me
Check this out for a modern and seemingly much more fleshed out docker support for Unreal