Best definition: there is no such thing as a container. When people say container they usually mean a bunch of kernel features (cgroups, namespaces, apparmor, e

Best definition: there is no such thing as a container. When people say container they usually mean a bunch of kernel features (cgroups, namespaces, apparmor, etc) + an overlay filesystem. I played with stuff like this since the chroot jail days and knew about containers before they were cool (anyone remember lxc?).