添加docker官方的GPG密钥

sudo apt-get update

sudo apt-get install ca-certificates curl gnupg

sudo install -m 0755 -d /etc/apt/keyrings

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg

sudo chmod a+r /etc/apt/keyrings/docker.gpg

将docker仓库添加到apt源

echo \
  "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
  "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt-get update

安装docker

1	sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

检查docker

1	sudo systemctl status docker

如果状态是active，证明安装成功。

换源

#修改配置文件
sudo vim /etc/docker/daemon.json

#添加以下内容
{
    "registry-mirrors": [
    	#网易
        "http://hub-mirror.c.163.com",
        
        # 中科大
        "https://docker.mirrors.ustc.edu.cn",
        
    ]
}

#重启docker
sudo service docker restart