RancherOS 1.x is currently in a maintain-only-as-essential mode. That is to say, it is no longer being actively maintained at a code level other than addressing critical or security fixes.

BurmillaOS is our reaction of us to the End of RancherOS, which was one of the smallest and easiest ways to run docker as every process including services as udev or even syslog are running in their own containers. As the system is stripped of anything unnecessary to run docker, the resulting system is way smaller than most others of todays operating systems.