It would be great on one machine. First, it's a lightweight host for docker containers, like less than half the size, so you can do more with that single machin

It would be great on one machine. First, it's a lightweight host for docker containers, like less than half the size, so you can do more with that single machine. Second, if it ever turns out you _need_ a second machine, you have room to grow, other than just getting a bigger box.