Install Docker on Ubuntu

Install Docker on Ubuntu 14.04 LTS

   1. Check current kernel version use  uname -r     uname -r
     3.19.0-25-generic

   2. Update apt source.     apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys     
     58118E89F3A912897C070ADBF76221572C52609D

   3. Open /etc/apt/sources.list.d/docker.list file and Remove existing entries.
     vi /etc/apt/sources.list.d/docker.list
     if the file doesn't exist, create it.
 
   4. Add below enties.  
     deb https://apt.dockerproject.org/repo ubuntu-trusty main

   5. Save and close. 

   6. Update Ubuntu pakage
     Docker#apt-get update

   7. install both the required and optional packages.
     Docker#apt-get install linux-image-generic-lts-trusty

   8. reboot your host
     Docker#reboot

Install Docker

 
  1. Login your Ubuntu Host, as a root or user with sudo privileges.
     apt-get update

  2. Install Docker
   apt-get install docker-engine

  3. Verifi Docker Service running.
    service docker start
    start: Job is already running: docker
    docker -v
    Docker version 1.9.1, build a34a1d5