For anyone interested in Docker, I wrote a Dockerfile for putting Zorro and MT4 in a Docker container. It's a bit incomplete since I don't think I can distribute pre-installed MT4 but you can see it here anyway. I'm using this to run Z3, Z7 and Z12 on a dedicated Linux server.

If anyone's really interested in this I'll alter the startup script to download and run the installers the first time you run it. That way it should work pretty painlessly.