[bm-rf]

I'm assuming you're spinning up an EC2 instance for each lab. What do you think about using pre-built docker images for each challenge instead? that way they can spin up in just a couple of seconds. Might also be cheaper?

[fduran]

I wanted to do full VMs rather than Docker images but yes I could do Docker images or dedicated big instances with VMs on top like somebody else is suggesting.

[bravetraveler]

Not a bad idea but something to consider; this limits the options for kernel level things quite considerably

[clvx]

probably lxd would be better.