Re:How containers became a tech darling, and why Docker beca...
by NeutronBoy on Monday May 25, 2015 @06:12AM
(#9599367)
There was this [1] posted not long back, and it basically says exactly that - Docker is a convenient layer around existing kernel functions and systemd. You can do it all manually.
https://chimeracoder.github.io/docker-without-docker/#1