There is this project out there projectatomic.io which provides a platform for running containers. And is an important part of the RHEL container story. Project atomic consists actually of several technologies this document looks at atomic host.
Atomic Host is a lightweight, immutable platform, designed with the sole purpose of running containerized applications.
Currently Fedora, RHEL and CentOS offer an atomic host base release. The main technology atomic host build upon is OSTree.
OSTree builds fully assembled, versioned filesystem trees that hold what would have gone into a set of package (e.g. RPM) files. All of the binaries, libraries, documentation files, and so on are gathered together into the OSTree repository and can be retrieved using the ostree command.