Container execution example

Just an example of running a container using direct syscalls on C.

Running

To build run make. To run, first extract a filesystem to a directory of name "rootfs". Then run:

./cnt /bin/ls /
set up pivot root
bin   dev  home  lib64	mnt  proc  run	 srv  tmp  var
boot  etc  lib	 media	opt  root  sbin  sys  usr

The program requires CLONE_NEWUSER support on the kernel, otherwise will you need to run as root.