All chroot does is, for all ChildProcesses, replace the root directory with the one specified.
Setting up a network inside a chroot /tmp/custom/debian-live/chroot/
sudo mount -o bind /sys /tmp/custom/debian-live/chroot/sys sudo mount -o bind /proc /tmp/custom/debian-live/chroot/proc sudo chroot /tmp/custom/debian-live/chroot/
Now in the chroot you might need to reset the ?network in order for the route/dns stuff to be setup.
This is useful for testing and configuring a system that is to be deployed, e.g.DebianLive.
Build a chroot
Debootstrap : Setting up another complete Debian install inside a chroot.