UCS supports running Docker containers. The docker.io Debian package is installed by default since the App Center uses Docker containers to deploy applications on UCS systems.
Additionally, Docker Hub hosts a couple of VM-style containers that allow to run a full UCS userspace as a container, which may be interesting in special scenarios. There are role specific images like the UCS DC Primary Image as well as a UCS Generic Image, which can be configured into any UCS server role. This was the result of early experiments with docker, which doesn’t follow the general purpose of docker containers. At the time of writing Docker containers in general still have challenges with the exposure of wide dynamic port ranges, so running services like Samba/AD in these VM-style is not recommended.