Install or Updgrade Docker for Ubuntu

Install or Updgrade Docker for Ubuntu link

• Set up the repository

$ sudo apt-get install apt-transport-https \
                       ca-certificates
$ curl -s http://yum.dockerproject.org/gpg | sudo apt-key add
$ apt-key fingerprint 58118E89F3A912897C070ADBF76221572C52609D
$ sudo add-apt-repository \
       "deb https://apt.dockerproject.org/repo/pool/ \
       $(lsb_release -cs) \
       main"

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• Install docker

$ sudo apt-get update
$ sudo apt-get -y install docker-engine