- 由于apt官方库里的docker版本可能比较旧,所以先卸载可能存在的旧版本:
$ sudo apt-get remove docker docker-engine docker-ce docker.io
![](https://img2018.cnblogs.com/blog/1447010/201810/1447010-20181018103420416-1099336001.png)
$ sudo apt-get update
![](https://img2018.cnblogs.com/blog/1447010/201810/1447010-20181018103511590-1052927919.png)
- 安装以下包以使apt可以通过HTTPS使用存储库(repository):
$ sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common
![](https://img2018.cnblogs.com/blog/1447010/201810/1447010-20181018103632825-1436166906.png)
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
$ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
![](https://img2018.cnblogs.com/blog/1447010/201810/1447010-20181018103755766-957101.png)
$ sudo apt-get update
![](https://img2018.cnblogs.com/blog/1447010/201810/1447010-20181018103859504-1424882400.png)
$ sudo apt-get install -y docker-ce
![](https://img2018.cnblogs.com/blog/1447010/201810/1447010-20181018103947660-189979857.png)
sudo systemctl enable docker
sudo systemctl start docker
![](https://img2018.cnblogs.com/blog/1447010/201810/1447010-20181018104029493-1848194345.png)
验证docker是否安装成功:
$ sudo docker run hello-world
![](https://img2018.cnblogs.com/blog/1447010/201810/1447010-20181018104145366-1315197362.png)
搞定。。。