Taken from this gist by github.com/agbaraka
https://gist.github.com/agbaraka/654a218f8ea13b3da8a47d47595f5d05
There is no in-built way of dealing with contexts using the golang sdk.
This means we have to make our own Dial helper borrowing from Docker CLI
This means all Docker API calls are made within the ssh connection
This uses `docker system dial-stdio`