前言

ubuntu20.4安裝docker官網(wǎng)主要步驟如下：

先刪除之前的版本

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

使用阿里云源

可以先備份一下，然后編輯，復(fù)制阿里源進去，保存！

sudo mv /etc/apt/sources.list /etc/apt/sources.list.bak
sudo gedit /etc/apt/sources.list

阿里源：

deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse

檢查并更新

sudo apt update
sudo apt upgrade

安裝docker

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

安裝的過程很慢，需要耐心等待一下
安裝完畢

運行docker，開啟

sudo docker run hello-world`

運行helloworld

sudo docker run hello-world