ruo91/dind repository overview

root@ruo91:~# docker run -d --name="dind" -h "dind" -v /dev:/dev ruo91/dind

root@ruo91:~# docker exec dind docker pull centos:centos7
centos7: Pulling from centos
6941bfcbbfca: Pulling fs layer
41459f052977: Pulling fs layer
fd44297e2ddb: Pulling fs layer
fd44297e2ddb: Pulling fs layer
fd44297e2ddb: Layer already being pulled by another client. Waiting.
fd44297e2ddb: Verifying Checksum
fd44297e2ddb: Download complete
fd44297e2ddb: Download complete
6941bfcbbfca: Verifying Checksum
6941bfcbbfca: Download complete
6941bfcbbfca: Pull complete
41459f052977: Verifying Checksum
41459f052977: Download complete
41459f052977: Pull complete
fd44297e2ddb: Pull complete
fd44297e2ddb: Already exists
centos:centos7: The image you are pulling has been verified. Important: image verification is a tech preview feature and should not be relied on to provide security.
Digest: sha256:4e0dd3018581da81a149a9291197f4668b2f4cc3de74878c069576db0344be9a
Status: Downloaded newer image for centos:centos7

root@ruo91:~# ssh `docker inspect -f '{{ .NetworkSettings.IPAddress }}' dind`

root@dind:~# docker run -it centos:centos7 /bin/bash
[root@0af4ae1dca49 /]# cat /etc/redhat-release
CentOS Linux release 7.1.1503 (Core)