I agree with this. What's to stop me from opening a bunch of the containers and using them to DDOS someone or to send out spam emails? I'm already playing around with system commands and they seem to be entirely unrestricted.

Basically I can run any bash script, as is, with

    import sys.process._
    "BASH_COMMAND" !!

And I seem to be able to at least cause the containers to endlessly restart quite simply.