Docker is an open-source implementation of the deployment engine which powers dotCloud, a popular Platform-as-a-Service. It benefits directly from the experience accumulated over several years of large-scale operation and support of hundreds of thousands of applications and databases.
The project got its start in 2013 and has since emerged to become one of the hottest areas of enterprise virtualization technology. Unlike traditional virtualization, Docker relies on a different sandboxing method known as containerization, which takes place at the kernel level. Most modern operating system kernels now support the primitives necessary for containerization, including Linux with openvz, vserver and more recently lxc, Solaris with zones and FreeBSD with Jails.
Docker 1.0.0 is a stable release fully supported by Red Hat Enterprise Linux 7, as well commercially supported by Docker Inc. with a number of different support options that the company will provide, including training, architectural review and support. Red Hat will not abandon the Kernel-mode Virtual Machine (KVM) virtualization hypervisor, like they previously did with Xen.
We are currently working on building and testing the 1.0.0 release for Red Hat 6 based distributions, it will be available soon into AXIVO repository.