1 更改apt源，更改前先对sources.list文件进行备分
ccskun@test:~$ sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
修改sources.list文件
sudo gedit /etc/apt/sources.listdeb http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiversedeb http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiversedeb-src http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse
更新apt源
ccskun@test:~$ sudo apt-get update
2 安装Docker
ccskun@test:~$ sudo apt-get install docker.io
安装完成后，需要重启下系统。
sudo reboot
3 验证
ccskun@test:~$ sudo docker infoContainers: 0Images: 0Storage Driver: aufs Root Dir: /var/lib/docker/aufs Backing Filesystem: extfs Dirs: 0 Dirperm1 Supported: trueExecution Driver: native-0.2Kernel Version: 4.4.0-22-genericOperating System: Ubuntu 16.04 LTS (containerized)CPUs: 4Total Memory: 3.842 GiBName: testID: H6MK:VMBX:ARD3:R4GN:VMVW:WHPW:AM35:JYVZ:QVYV:2L4M:AWCQ:QOPJWARNING: No swap limit supportccskun@test:~$