I think you could fix this - we'll push a patch shortly, but just for the impatient, the issue is how the container is named.
(I don't have a PC ATM so this is untested)
In the tyk_analytics.conf file that comes with the repo, change the gateway hostname from "gateway" to "tyk_gateway"
Then recreate or restart the containers
The reason why storage isn't mapped externally is because the docker QuickStart is a demo