Upto date docker installation instructions are are available from the docker website. https://docs.docker.com/engine/installation/linux/ubuntulinux/ ==Prerequisites by Ubuntu Version== Ubuntu Xenial 16.04 (LTS) Ubuntu Wily 15.10 Ubuntu Trusty 14.04 (LTS) For Ubuntu Trusty, Wily, and Xenial, it’s recommended to install the linux-image-extra-* kernel packages. The linux-image-extra-* packages allows you use the aufs storage driver. To install the linux-image-extra-* packages: 1. Open a terminal on your Ubuntu host. 2. Update your package manager. {{{ $ sudo apt-get update }}} 3. Install the recommended packages. {{{ $ sudo apt-get install linux-image-extra-$(uname -r) linux-image-extra-virtual }}} Go ahead and install Docker. {{{ sudo apt-get update sudo apt-get install apt-transport-https ca-certificates sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D sudo vi /etc/apt/sources.list.d/docker.list cd /etc/apt/ ls cd sources.list.d/ ls sudo vi /etc/apt/sources.list.d/docker.list cd /home ls cd si84/ sudo apt-get update sudo apt-get purge lxc-docker apt-cache policy docker-engine sudo apt-get install linux-image-extra-$(uname -r) sudo apt-get update sudo apt-get install docker-engine sudo service docker start }}}