The virt-builder templates that we ship just have core packages from each Linux distro. You can install more packages yourself using the --install option or by writing scripts. Debian 7 doesn’t have cloud-init in the base distro, but it is in wheezy-backports so we have to write a short script that enables wheezy-backports and installs cloud-init from there: #!/bin/sh set -e # Install wheezy backp