Nesting Docker in Docker didn't work as expected.

console.log

root@2ccdea23768f:/# docker -d -H=unix:///var/run/docker.sock 1>/var/log/docker.log 2>/var/log/docker.err &
[1] 61
root@2ccdea23768f:/# 
root@2ccdea23768f:/# docker pull stackbrew/ubuntu
Pulling repository stackbrew/ubuntu
24ba2ee5d982: Error pulling image (saucy) from stackbrew/ubuntu, Driver aufs failed to get image ro0e5997dad26c: Error pulling image (13.04) from stackbrew/ubuntu, Driver aufs failed to get image ro3aa646e4f1d2: Error pulling image (precise) from stackbrew/ubuntu, Driver aufs failed to get image rootfs b74728ce6435943c0ace1a90649f136c904b1c412f556a95bb1b812457aabd76: invalid argument b1c412f556a95bb1b812457aabd76: invalid argument 1edb3f59df3f8699f8dadf20b9a2630b: invalid argument b3f59df3f8699f8dadf20b9a2630b: invalid argument nt layers 
b74728ce6435: Error downloading dependent layers 
0ce1be727978: Error downloading dependent layers 
46e4dee27895: Error downloading dependent layers 
2014/01/22 08:47:44 Could not find repository on any of the indexed registries.
root@2ccdea23768f:/# cat /var/log/docker.log 
Loading containers: : done.
root@2ccdea23768f:/# 
root@2ccdea23768f:/# cat /var/log/docker.err 
[/var/lib/docker|b4afe4a1] +job initapi()
[/var/lib/docker|b4afe4a1.initapi()] Creating server
2014/01/22 08:47:25 WARNING: Your kernel does not support cgroup swap limit.
[/var/lib/docker|b4afe4a1.initapi()] Creating pidfile
[/var/lib/docker|b4afe4a1.initapi()] Setting up signal traps
[/var/lib/docker|b4afe4a1] Register(export) (handlers=map[initapi:0x4a5530 version:0x4c18c0])
[/var/lib/docker|b4afe4a1] Register(create) (handlers=map[initapi:0x4a5530 version:0x4c18c0 export:0x4c72c0])
[/var/lib/docker|b4afe4a1] Register(stop) (handlers=map[initapi:0x4a5530 version:0x4c18c0 export:0x4c72c0 create:0x4c7300])
[/var/lib/docker|b4afe4a1] Register(start) (handlers=map[initapi:0x4a5530 version:0x4c18c0 export:0x4c72c0 create:0x4c7300 stop:0x4c7340])
[/var/lib/docker|b4afe4a1] Register(kill) (handlers=map[initapi:0x4a5530 version:0x4c18c0 export:0x4c72c0 create:0x4c7300 stop:0x4c7340 start:0x4c7380])
[/var/lib/docker|b4afe4a1] Register(serveapi) (handlers=map[initapi:0x4a5530 version:0x4c18c0 export:0x4c72c0 create:0x4c7300 stop:0x4c7340 start:0x4c7380 kill:0x4c73c0])
[/var/lib/docker|b4afe4a1] Register(wait) (handlers=map[initapi:0x4a5530 version:0x4c18c0 export:0x4c72c0 create:0x4c7300 stop:0x4c7340 start:0x4c7380 kill:0x4c73c0 serveapi:0x4c7400])
[/var/lib/docker|b4afe4a1] Register(tag) (handlers=map[initapi:0x4a5530 version:0x4c18c0 export:0x4c72c0 create:0x4c7300 stop:0x4c7340 start:0x4c7380 kill:0x4c73c0 serveapi:0x4c7400 wait:0x4c7440])
[/var/lib/docker|b4afe4a1] Register(resize) (handlers=map[serveapi:0x4c7400 wait:0x4c7440 initapi:0x4a5530 version:0x4c18c0 export:0x4c72c0 create:0x4c7300 stop:0x4c7340 start:0x4c7380 kill:0x4c73c0 tag:0x4c7480])
[/var/lib/docker|b4afe4a1] Register(commit) (handlers=map[initapi:0x4a5530 version:0x4c18c0 export:0x4c72c0 create:0x4c7300 stop:0x4c7340 start:0x4c7380 kill:0x4c73c0 tag:0x4c7480 resize:0x4c74c0 serveapi:0x4c7400 wait:0x4c7440])
[/var/lib/docker|b4afe4a1] Register(info) (handlers=map[serveapi:0x4c7400 wait:0x4c7440 commit:0x4c7500 initapi:0x4a5530 version:0x4c18c0 export:0x4c72c0 create:0x4c7300 stop:0x4c7340 start:0x4c7380 kill:0x4c73c0 tag:0x4c7480 resize:0x4c74c0])
[/var/lib/docker|b4afe4a1] -job initapi() = OK (0)
[/var/lib/docker|b4afe4a1] +job serveapi(unix:///var/run/docker.sock)
2014/01/22 08:47:25 Listening for HTTP on /var/run/docker.sock (unix)
2014/01/22 08:47:35 POST /v1.8/images/create?fromImage=stackbrew%2Fubuntu&tag=
[error] server.go:873 Image (id: 511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158) pull is already running, skipping: pull layer:511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158 is already in progress
[error] server.go:873 Image (id: 511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158) pull is already running, skipping: pull layer:511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158 is already in progress
[error] server.go:873 Image (id: 511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158) pull is already running, skipping: pull layer:511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158 is already in progress
[error] mount.go:11 [warning]: couldn't run auplink before unmount: exit status 22
[error] mount.go:11 [warning]: couldn't run auplink before unmount: exit status 22
[error] mount.go:11 [warning]: couldn't run auplink before unmount: exit status 22
[error] mount.go:11 [warning]: couldn't run auplink before unmount: exit status 22

Dockerfile

# Matryoshka Docker
FROM stackbrew/ubuntu:12.04
MAINTAINER Garth Kidd <garth@garthk.com>
ENV DEBIAN_FRONTEND noninteractive
RUN locale-gen en_US.UTF-8
ENV LANG en_US.UTF-8
RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys A88D21E9
RUN echo 'deb http://archive.ubuntu.com/ubuntu precise main universe' > /etc/apt/sources.list
RUN echo 'deb http://security.ubuntu.com/ubuntu precise-security main restricted' >> /etc/apt/sources.list
RUN apt-get update && apt-get upgrade -y && apt-get install -y apt-transport-https curl
RUN echo 'deb https://get.docker.io/ubuntu docker main' >> /etc/apt/sources.list
RUN apt-get update && apt-get install -y lxc-docker
RUN cd /usr/local/bin && curl -OL https://raw2.github.com/dotcloud/docker/master/hack/dind && chmod a+x ./dind
# EXTRAS:
RUN apt-get install -y git-core
RUN cd / && git clone https://gist.github.com/8553920.git
ENTRYPOINT ["/usr/local/bin/dind"]
CMD ["/bin/bash"]

nest.sh

#!/bin/sh
docker build -t=matroyshka .
docker run -privileged -rm -t -i matroyshka

tianon/dind fails the same way, which I wasn't expecting.