Can we please stop sounding the trumpet of "progress"? Containers have been around for nearly a couple of decades (possibly more if you extend the definition), since IBM i had LPARs.
There's nothing fast-moving or technologically novel about, especially, Linux containers.
If I remember correctly from my AIX days (a while back, admittedly), LPARs are more like VMs than containers. Though you are still correct... virtualization goes back decades!
There's nothing fast-moving or technologically novel about, especially, Linux containers.