docker的卸载和安装

一、安装最新版本的docker 

1)sudo apt-get update

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

添加GPG 密钥

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

4)sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

5)sudo apt-get update

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

7)验证是否正确：sudo docker run hello-world

二、安装指定版本的docker

1）sudo apt-get update
2）sudo apt-get install \
    ca-certificates \
    curl \
    gnupg \
    lsb-release
3）sudo mkdir -p /etc/apt/keyrings
4）curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg

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

6)查看可以安装的版本：

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apt-cache madison docker-ce | awk '{ print $3 }'

7）VERSION_STRING=5:20.10.13~3-0~ubuntu-jammy（替换成你自己可以安装的版本）
sudo apt-get install docker-ce=$VERSION_STRING docker-ce-cli=$VERSION_STRING containerd.io docker-compose-plugin
8）验证 sudo docker run hello-world

卸载docker

1.卸载docker

sudo apt-get autoremove docker docker-ce docker-engine  docker.io  containerd runc

2.查看删除docker其他有没有没有卸载干净的包

dpkg -l | grep docker

3.卸载相应的包

sudo apt-get autoremove docker-ce-*

4.删除docker的相关配置&目录

sudo rm -rf /etc/systemd/system/docker.service.d
sudo rm -rf /var/lib/docker

5.确定docker卸载完毕

docker --version

安装dicker