[gabrtv]

Docker and Chef are not mutually exclusive. Case in point: http://deis.io/ is a PaaS that uses Chef extensively for orchestration of containers. There are other approaches that don't use CM (e.g. CoreOS) but they are still very early.

I do agree that Docker makes Chef less appealing for automating deployment of applications that should be containerized -- most web apps, Redis, etc. However, Docker is not yet suitable for every workload. For example, if your application/service has complex storage or networking requirements, Docker may not be a good fit (yet).