docker is not VM , why container need base image OS ？ [closed]
Solution 1:
You might want to refer to this blog post: http://www.activestate.com/blog/2013/06/solomon-hykes-explains-docker
Simply put, Docker does a process isolation leveraging LXC (a kind of lightweight virtualisation built into Linux Kernel). The basic difference between LXC and VMs is that with LXC there is only one instance of Linux Kernel running. The base image OS is used for filesystem, binaries, etc.