First we need to install the tools required to create chroot environments:
sudo apt-get install dchroot debootstrap
Next we need to add an appropriate configuration to `/etc/schroot/schroot.conf':
[trusty] description=trusty location=/var/chroot/trusty priority=3 users=doko groups=sbuild root-groups=root
Create the folder where we will be making the root file system:
sudo mkdir -p /var/chroot/trusty
Now generate a basic root file system:
sudo debootstrap --variant=buildd --arch amd64 trusty /var/chroot/trusty http://archive.ubuntu.com/ubuntu/