Docker has a lot of rough edges and it's most useful in large scale-out deployments. In-band devops tools like Chef and Ansible are relatively agnostic to the

Docker has a lot of rough edges and it's most useful in large scale-out deployments. In-band devops tools like Chef and Ansible are relatively agnostic to the hypervisor or container solution, so if you only need a few OS instances & managed configuration, I suggest sticking with Chef/Ansible/Puppet (I prefer ansible :)). You can always scale out with docker later and I know at least ansible are adressing this use case (http://www.ansible.com/docker http://www.ansible.com/docker).