ubuntu 16.04 终端安装Docker

更新APT的源，安装https和ca证书的库，默认这2个库都已经装了。

sudo apt-get update

sudo apt-get install apt-transport-https ca-certificates

添加秘钥GPG到APT配置中。

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

增加Docker的源到/etc/apt/souces.list文件中，我的版本是14.04对应ubuntu-trusty。

sudo vim /etc/apt/sources.list

# 增加到最后一行
deb https://apt.dockerproject.org/repo ubuntu-trusty main

接下来，就可以用可以用apt-get直接安装Docker了。

sudo apt-get update

sudo apt-get install docker-engine

此时会遇到一个错误：

xdstar@ubuntu:/etc/apt$ sudo apt-get install docker-engine

Reading package lists... Done

Building dependency tree

Reading state information... Done

Some packages could not be installed. This may mean that you have

requested an impossible situation or if you are using the unstable

distribution that some required packages have not yet been created

or been moved out of Incoming.

The following information may help to resolve the situation:



The following packages have unmet dependencies:

 docker-engine : Depends: libsystemd-journal0 (>= 201) but it is not installable

                 Recommends: aufs-tools but it is not going to be installed

                 Recommends: cgroupfs-mount but it is not going to be installed or

                             cgroup-lite but it is not going to be installed

E: Unable to correct problems, you have held broken packages.

解决办法：
在source.list 中docker源之前加上
deb http://cz.archive.ubuntu.com/ubuntu trusty main

然后 更新和安装

sudo apt-get update

sudo apt-get install docker-engine

OK！！！