Docker Upgrade 1.4.1 to 1.7 on Ubuntu 14.04

Getting started Docker upgrade

These are docker release note between 1.4 to 1.7

• Version 1.7
• Version 1.6
• Version 1.5

Docker Install or Upgrade Document is here under 1.6 version
http://beta-docs.docker.io/installation/ubuntulinux/

However after 1.7, document(and that server) is renewal.
https://docs.docker.com/installation/

So if you want to upgrade docker version 1.7, you need new install steps. If you do not install docker yet, please read new official document. DO NOT READ NON OFFICIAL PAGE.

Upgrade Steps

1. Uninstalling old Docker
2. Installing the latest Docker 1.7

Ref: http://linoxide.com/linux-how-to/install-upgrade-docker-1-7/

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書こうと思ったけどいい感じの記事があったからそれのリンクだけ貼っておくことにするよ( ・ω・)