[grapeli23]

You probably never heard or used - Linux VServer. Available from the later version of the 2.4 kernel.

https://en.wikipedia.org/wiki/Linux-VServer

[xj9]

> 2008

FreeBSD jails date from 2000

Solaris zones date from 2004

https://us-east.manta.joyent.com/bcantrill/public/ppwl-cantr...

https://us-east.manta.joyent.com/bcantrill/public/ppwl-cantr...

[grapeli23]

2003 http://linux-vserver.org/Overview#History

In the Linux distribution that I used (PLD), the first vserver support took place in january 2004. https://github.com/pld-linux/kernel/commit/5be58c1bcc5568676...

Maybe a little earlier because the util-vserver showed in Nov 2003. https://github.com/pld-linux/util-vserver/commit/c4036d6e748...