End-of-Life Announcement for CoreOS Container Linux
Fedora CoreOS seems like it has some pretty significant restrictions>    It does not yet include native support for Azure, DigitalOcean, GCE, Vagrant, or the Container Linux community-supported platforms.>    The rkt container runtime is not included.>    Fedora CoreOS provides best-effort stability, and may occasionally include regressions or breaking changes for some use cases or workloads.