ubuntu19.10安装docker方法

参考官网与该大神的博客：

https://docs.docker.com/install/linux/docker-ce/ubuntu/

https://blog.csdn.net/KH_FC/article/details/102959130

1、Update the apt package index:

sudo apt-get update

2、Install packages to allow apt to use a repository over HTTPS:

sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \
    software-properties-common

3、Add Docker’s official GPG key:

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

4、Verify that you now have the key with the fingerprint 9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88, by searching for the last 8 characters of the fingerprint.

sudo apt-key fingerprint 0EBFCD88

pub   rsa4096 2017-02-22 [SCEA]
      9DC8 5822 9FC7 DD38 854A  E2D8 8D81 803C 0EBF CD88
uid           [ unknown] Docker Release (CE deb) <[email protected]>
sub   rsa4096 2017-02-22 [S]

6、Use the following command to set up the stable repository. To add the nightly or test repository, add the word nightly or test (or both) after the word stable in the commands below. Learn about nightly and test channels.

注意此处我用的英特尔x86 64的系统，所以需要对应的选择该系统的命令，同时这里使用官方提供的命令会报错，所以使用下面的命令即可。

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable"

curl -fsSL http://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu/gpg | sudo apt-key add -

注意是两条命令。

7、Update the apt package index.

sudo apt-get update

8、nstall the latest version of Docker Engine - Community and containerd, or go to the next step to install a specific version:

sudo apt-get install docker-ce docker-ce-cli containerd.io

9、大功告成，试一下docker提供的demo验证一下是否安装成功。

sudo docker run hello-world