How to upgrade Docker in Ubuntu system

Docker is an open source application container engine. It is very necessary to upgrade under Ubuntu system, so that developers can get in touch with Docker's new functions in time. The following small series will make it easy for Docker to upgrade Ubuntu system. Introduction.

For those who want to follow the latest development of the Docker, Canonical is Docker maintains a separate PPA. With this PPA repository, you can easily upgrade to the latest Docker version on Ubuntu.

Setting up Docker's PPA and upgrading Docker:

$ sudo add-apt-repository ppa:docker-maint/testing$ sudo apt-get update$ sudo apt-get install docker.io< Br>

Check the installed Docker version:

$ docker --version

Docker version 1.5.0-dev, build a78ce5c

By the method described in this article, Users can upgrade Docker to the latest version, and developers should check regularly if Docker is the latest version.