I followed this instructions https://github.com/bitcoin/bitcoin/blob/master/doc/gitian-building.md but on this step: https://github.com/bitcoin/bitcoin/blob/master/doc/gitian-building.md#setting-up-the-gitian-image i have got an error:

cp: cannot stat ‘base-trusty-amd64-bootstrap/usr/lib/x86_64-linux-gnu/lxc/lxc-init’: No such file or directory debian@debian:~/gitian-builder$

How to fix it?