Comment 1 for bug 1592576

Alex, I think we can simply update docker version [1], not sure about use the latest version (need additional check), but at least we are using on our build slaves version 1.6.2:

$] docker version
Client version: 1.6.2
Client API version: 1.18
Go version (client): go1.4.2
Git commit (client): 7c8fca2
OS/Arch (client): linux/amd64
Server version: 1.6.2
Server API version: 1.18
Go version (server): go1.4.2
Git commit (server): 7c8fca2
OS/Arch (server): linux/amd64

[1]. https://github.com/openstack/fuel-main/blob/stable/8.0/prepare-build-env.sh#L105