How to move the storage location of Docker in CentOS/Red Hat 7

1. systemctl stop docker
2. verify its off ps -ef | grep docker
3. edit the config file
   - vim /etc/sysconfig/docker
4. modify the following line to:
   -OPTIONS='--selinux-enabled -g /path/to/your/folder'
5. Save and close
6. systemctl start docker

You should now see folders in the new folder location.

Tested on: CentOS 7.2

Source:  Link