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centos系统安装docker

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1.清理旧版本docker

sudo yum remove docker \
        docker-client \
        docker-client-latest \
        docker-common \
        docker-latest \
        docker-latest-logrotate \
        docker-logrotate \
        docker-engine

2.安装yum-utils工具包 & 设置镜像仓库 & 更新yum软件包索引

sudo yum install -y yum-utils

# 官方镜像仓库
sudo yum-config-manager \
        --add-repo \
        https://download.docker.com/linux/centos/docker-ce.repo

# 国内镜像仓库
sudo yum-config-manager \
        --add-repo \
        https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

sudo yum makecache fase

3.安装docker-ce及docker-compose插件

sudo yum install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin

4.启动docker & 开机启动docker

sudo systemctl start docker

sudo systemctl enable docker

安装完成后可使用以下命令查看docker信息

# docker版本信息
sudo docker version

# docker详细系统信息
sudo docker info

# docker命令帮助信息
sudo docker <cmd> --help

docker卸载命令

sudo yum remove docker-ce docker-ce-cli containerd.io docker-compose-plugin

sudo rm -rf /var/lib/docker
sudo rm -rf /var/lib/containerd

官方安装文档: https://docs.docker.com/engine/install/