Broken and out of date with Docker 1.8+

[lox]

Given moby/moby#15596, is it worth either pointing to the latest https://raw.githubusercontent.com/docker/docker/master/hack/dind or just deleting this project entirely?

[jpetazzo]

Looks like there would be two options:

1. Running the docker official image with -v /var/lib/docker (and privileged mode), then apk update && apk add iptables and have fun

2. Possibly running busybox, ubuntu (or something with iptables already installed) and bind-mounting the Docker binary in it (didn't test, tho, also it needs dyn libs since now Docker ships as dynamic libs)

... Anyway it's not totally ready yet!

[jpetazzo]

... 3) Use docker:dind :D

I updated the README to mention that.

Thank you for bringing this to my attention!