Document how to specify networks for a container

[alexanderadam]

Hello @jnicklas ,

first of all: thank you for docker_deploy!

Now to the question: currently I don't see any way to configure Docker networking. Is it somehow possible to add the container to some networks?

So basically something that would result in parameters like --net=batman --net=banana?

Or would it be possible to give the possibility just to add 'raw' parameters?

Thank you in advance