If you want to run your own infrastructure from the ground up, maybe. Ironic (bare metal deploys) + Magnum (container deploys with Kubernetes) is exciting in that area, but as someone who wrote and ran an OpenStack cloud, I wouldn't recommend it. For most people, something like ECS/GKE/bare Kubernetes on a cloud provider is a decent step in that direction.

Terrible usability, and mainly aiming at the lower levels of the stack, not the level of actually deploying applications. It is far easier to get a container stack running than to bother with Open Stack.

Personally I think it might make sense to run your stateful apps in openstack VMs and the stateless portion in containers.