• Given the fact that debian is pretty conservative distribution it is better to use ubuntu as a host system - even on LTS Ubuntu Server 14.04 it is recommended to upgrade docker via its repository. This can be done following this tutorial:

http://www.bogotobogo.com/DevOps/Docker/Docker_Install_On_Ubuntu_14.php

apt-get install docker.io

• linux kernel > 3.2 needed → kind of problem, our xen servers has 3.0 kernels
• best way is to extract kernel (vmlinuz and initramfs) from VPS and point to them in the cfg
• then

  apt-get install docker.io