Docker Installation

For linux, download from http://docs.docker.com/engine/installation/linux/. For Ubuntu, read and follow the step here.

1. Check the kernel machine. The kernel should be newer than 3.1. Also docker requires 64-bit Ubuntu.
   
   teddy@teddy-K43SJ:~$ uname -r 4.4.0-38-generic

   1 2	teddy@teddy-K43SJ:~$ uname -r 4.4.0-38-generic

   
   My kernel version is 4.4.0-38 (PASS)
2. Update APT source
   Update system
   
   sudo apt-get update

   1	sudo apt-get update

   
   Update package information, ensure that APT works with the https method, and that CA certificates are installed.
   
   teddy@teddy-K43SJ:~$ sudo apt-get install apt-transport-https ca-certificates Reading package lists... Done Building dependency tree Reading state information... Done apt-transport-https is already the newest version. ca-certificates is already the newest version. ca-certificates set to manually installed.

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   teddy@teddy-K43SJ:~$ sudo apt-get install apt-transport-https ca-certificates Reading package lists... Done Building dependency tree       Reading state information... Done apt-transport-https is already the newest version. ca-certificates is already the newest version. ca-certificates set to manually installed.

   
   Add the new GPG key
   
   teddy@teddy-K43SJ:~$ sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.WSnymkJUMh --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyring /etc/apt/trusted.gpg.d/alexmurray-indicator-sensors-daily.gpg --keyring /etc/apt/trusted.gpg.d/bhdouglass-indicator-remindor.gpg --keyring /etc/apt/trusted.gpg.d/damien-moore-codeblocks-stable.gpg --keyring /etc/apt/trusted.gpg.d/danielrichter2007-grub-customizer.gpg --keyring /etc/apt/trusted.gpg.d/font-manager-staging.gpg --keyring /etc/apt/trusted.gpg.d/geany-dev-ppa.gpg --keyring /etc/apt/trusted.gpg.d/george-edison55-nitroshare.gpg --keyring /etc/apt/trusted.gpg.d/jfi-psensor-unstable.gpg --keyring /etc/apt/trusted.gpg.d/kirillshkrogalev-ffmpeg-next.gpg --keyring /etc/apt/trusted.gpg.d/linrunner-tlp.gpg --keyring /etc/apt/trusted.gpg.d/maarten-baert-simplescreenrecorder.gpg --keyring /etc/apt/trusted.gpg.d/mc3man-trusty-media.gpg --keyring /etc/apt/trusted.gpg.d/n-muench-programs-ppa2.gpg --keyring /etc/apt/trusted.gpg.d/obsproject-obs-studio.gpg --keyring /etc/apt/trusted.gpg.d/ondrej-php.gpg --keyring /etc/apt/trusted.gpg.d/ondrej-php5-5_6.gpg --keyring /etc/apt/trusted.gpg.d/ondrej-php5-compat.gpg --keyring /etc/apt/trusted.gpg.d/osmoma-audio-recorder.gpg --keyring /etc/apt/trusted.gpg.d/recoll-backports-recoll-1_15-on.gpg --keyring /etc/apt/trusted.gpg.d/tsvetko_tsvetkov-trusty-backports.gpg --keyring /etc/apt/trusted.gpg.d/tuxonice-ppa.gpg --keyring /etc/apt/trusted.gpg.d/ubuntu-audio-dev-alsa-daily.gpg --keyring /etc/apt/trusted.gpg.d/umang-indicator-stickynotes.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-brackets.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-java.gpg --keyring /etc/apt/trusted.gpg.d/wine-wine-builds.gpg --keyring /etc/apt/trusted.gpg.d/xorg-edgers-ppa.gpg --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D gpg: requesting key 2C52609D from hkp server p80.pool.sks-keyservers.net ?: p80.pool.sks-keyservers.net: Host not found gpgkeys: HTTP fetch error 7: couldn't connect: Success gpg: no valid OpenPGP data found. gpg: Total number processed: 0

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   teddy@teddy-K43SJ:~$ sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.WSnymkJUMh --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyring /etc/apt/trusted.gpg.d/alexmurray-indicator-sensors-daily.gpg --keyring /etc/apt/trusted.gpg.d/bhdouglass-indicator-remindor.gpg --keyring /etc/apt/trusted.gpg.d/damien-moore-codeblocks-stable.gpg --keyring /etc/apt/trusted.gpg.d/danielrichter2007-grub-customizer.gpg --keyring /etc/apt/trusted.gpg.d/font-manager-staging.gpg --keyring /etc/apt/trusted.gpg.d/geany-dev-ppa.gpg --keyring /etc/apt/trusted.gpg.d/george-edison55-nitroshare.gpg --keyring /etc/apt/trusted.gpg.d/jfi-psensor-unstable.gpg --keyring /etc/apt/trusted.gpg.d/kirillshkrogalev-ffmpeg-next.gpg --keyring /etc/apt/trusted.gpg.d/linrunner-tlp.gpg --keyring /etc/apt/trusted.gpg.d/maarten-baert-simplescreenrecorder.gpg --keyring /etc/apt/trusted.gpg.d/mc3man-trusty-media.gpg --keyring /etc/apt/trusted.gpg.d/n-muench-programs-ppa2.gpg --keyring /etc/apt/trusted.gpg.d/obsproject-obs-studio.gpg --keyring /etc/apt/trusted.gpg.d/ondrej-php.gpg --keyring /etc/apt/trusted.gpg.d/ondrej-php5-5_6.gpg --keyring /etc/apt/trusted.gpg.d/ondrej-php5-compat.gpg --keyring /etc/apt/trusted.gpg.d/osmoma-audio-recorder.gpg --keyring /etc/apt/trusted.gpg.d/recoll-backports-recoll-1_15-on.gpg --keyring /etc/apt/trusted.gpg.d/tsvetko_tsvetkov-trusty-backports.gpg --keyring /etc/apt/trusted.gpg.d/tuxonice-ppa.gpg --keyring /etc/apt/trusted.gpg.d/ubuntu-audio-dev-alsa-daily.gpg --keyring /etc/apt/trusted.gpg.d/umang-indicator-stickynotes.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-brackets.gpg --keyring /etc/apt/trusted.gpg.d/webupd8team-java.gpg --keyring /etc/apt/trusted.gpg.d/wine-wine-builds.gpg --keyring /etc/apt/trusted.gpg.d/xorg-edgers-ppa.gpg --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D gpg: requesting key 2C52609D from hkp server p80.pool.sks-keyservers.net ?: p80.pool.sks-keyservers.net: Host not found gpgkeys: HTTP fetch error 7: couldn't connect: Success gpg: no valid OpenPGP data found. gpg: Total number processed: 0

   
   Then Open the /etc/apt/sources.list.d/docker.list file in your favorite editor. If the file doesn’t exist, create it.
   
   teddy@teddy-K43SJ:~$ sudo gedit /etc/apt/sources.list.d/docker.list

   1	teddy@teddy-K43SJ:~$ sudo gedit /etc/apt/sources.list.d/docker.list

   
   Make sure the file is empty or remove any existing entries. Add this on file for Ubuntu Trusty 14.04 (LTS)
   
   deb https://apt.dockerproject.org/repo ubuntu-trusty main

   1	deb https://apt.dockerproject.org/repo ubuntu-trusty main

   
   Save and close the file.
   Update the system
   
   sudo apt-get update

   1	sudo apt-get update

   
   Purge the old repo if it exists.
   
   teddy@teddy-K43SJ:~$ sudo apt-get purge lxc-docker Reading package lists... Done Building dependency tree Reading state information... Done Package 'lxc-docker' is not installed, so not removed ...

   1 2 3 4 5 6

   teddy@teddy-K43SJ:~$ sudo apt-get purge lxc-docker Reading package lists... Done Building dependency tree       Reading state information... Done Package 'lxc-docker' is not installed, so not removed ...

   
   Verify that APT is pulling from the right repository.
   
   teddy@teddy-K43SJ:~$ apt-cache policy docker-engine docker-engine: Installed: (none) Candidate: 1.12.1-0~trusty Version table: 1.12.1-0~trusty 0 500 https://apt.dockerproject.org/repo/ ubuntu-trusty/main amd64 Packages 1.12.0-0~trusty 0 500 https://apt.dockerproject.org/repo/ ubuntu-trusty/main amd64 Packages ...

   1 2 3 4 5 6 7 8 9 10

   teddy@teddy-K43SJ:~$ apt-cache policy docker-engine docker-engine:   Installed: (none)   Candidate: 1.12.1-0~trusty   Version table:      1.12.1-0~trusty 0         500 https://apt.dockerproject.org/repo/ ubuntu-trusty/main amd64 Packages      1.12.0-0~trusty 0         500 https://apt.dockerproject.org/repo/ ubuntu-trusty/main amd64 Packages      ...

   
   CONT….