Is it possible to set vm.args variables like the cookie

Hey,

I have been playing around with Distillery and Conform and I was wondering if it is possible to set the Erlang cookie in vm.args (`-setcookie "cookie?"`). I have my POC online here on Github [Ilyes512/elixir_hello_world](https://github.com/Ilyes512/elixir_hello_world).

I am still figuring it all out and trying to find a good way of handling the DevOps side. I got it running, so thats good :)

Thanks for all your work 👍