由於通過官方路徑安裝docker時總是連接不上，所以從網上找了半天，通過阿里雲鏡像安裝docker，我的Linux是ubuntu-16.04
一、配置源里的阿里雲鏡像倉庫
sudo vim /etc/apt/sources.list
添加以下倉庫
deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse 添加完后執行
sudo apt update
更新源
二、安裝裝一些必要工具
sudo apt-get -y install apt-transport-https ca-certificates curl software-properties-common
三、安裝docker
1.安裝gpe證書
curl -fsSL http://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add -
2.寫入軟件源
sudo add-apt-repository "deb [arch=amd64] http://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable"
3.更新源
sudo apt-get -y update
4 安裝docker
4.1安裝最新的docker
sudo apt-get install docker-ce
4.2安裝指定版本docker
（1）查看docker版本
apt-cache madison docker-ce
docker-ce | 18.06.0~ce~3-0~ubuntu | http://mirrors.aliyun.com/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 18.03.1~ce-0~ubuntu | http://mirrors.aliyun.com/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 18.03.0~ce-0~ubuntu | http://mirrors.aliyun.com/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 17.12.1~ce-0~ubuntu | http://mirrors.aliyun.com/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 17.12.0~ce-0~ubuntu | http://mirrors.aliyun.com/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 17.09.1~ce-0~ubuntu | http://mirrors.aliyun.com/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 17.09.0~ce-0~ubuntu | http://mirrors.aliyun.com/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 17.06.2~ce-0~ubuntu | http://mirrors.aliyun.com/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 17.06.1~ce-0~ubuntu | http://mirrors.aliyun.com/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 17.06.0~ce-0~ubuntu | http://mirrors.aliyun.com/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 17.03.2~ce-0~ubuntu-xenial | http://mirrors.aliyun.com/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 17.03.1~ce-0~ubuntu-xenial | http://mirrors.aliyun.com/docker-ce/linux/ubuntu xenial/stable amd64 Packages docker-ce | 17.03.0~ce-0~ubuntu-xenial | http://mirrors.aliyun.com/docker-ce/linux/ubuntu xenial/stable amd64 Packages 版本號是第一個豎線和第二個豎線之間的 ： 18.06.0~ce~3-0~ubuntu
（2）安裝制定版本docker
sudo apt-get install docker-ce=18.06.0~ce~3-0~ubuntu
5.安裝校驗
sudo docker version
完畢