docker-ce安装（ubuntu）

参考：https://docs.docker-cn.com/

卸载旧版本

$ sudo apt-get remove docker docker-engine docker.io

安装

ubuntu14.04要安装
$ sudo apt-get update
$ sudo apt-get install -y linux-image-extra-$(uname -r) linux-image-extra-virtual

$ sudo vim /etc/apt/sources.list #修改
deb http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse
$ sudo apt-get update

$ sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common

$ curl -fsSL http://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add -
$ dpkg --print-architecture #查看系统架构
$ sudo add-apt-repository "deb [arch=amd64] http://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable"
$ sudo apt-get -y update
$ sudo apt-get -y install docker-ce
sudo apt-get -y install docker-ce=<VERSION> #安装特定版本

修改源

安装完成后，修改/etc/default/docker或者/etc/docker/daemon.json*（版本不同，位置不同）修改镜像源。