On their github page they say that it "only works on an Ubuntu 64-bit image because it relies on Docker" (http://node-os.com/blog/get-involved/ http://node-os.c

On their github page they say that it "only works on an Ubuntu 64-bit image because it relies on Docker" (http://node-os.com/blog/get-involved/ http://node-os.com/blog/get-involved/) On their website they say "node-os is a full operating system built on top of the linux kernel." (http://node-os.com/ http://node-os.com/) Am I misunderstanding what is meant by "OS"? Or rather, what is the definition on an operation system to which this adheres?