1.卸载旧版

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

2.配置Docker的yum库

sudo yum install -y yum-utils device-mapper-persistent-data lvm2

安装成功后，执行命令，配置Docker的yum源

sudo yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

sudo sed -i 's+download.docker.com+mirrors.aliyun.com/docker-ce+' /etc/yum.repos.d/docker-ce.repo

更新yum，建立缓存

sudo yum makecache fast

3.安装Docker

最后，执行命令，安装Docker

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

4.启动和校验

# 启动Docker
systemctl start docker

# 停止Docker
systemctl stop docker

# 重启
systemctl restart docker

# 设置开机自启
systemctl enable docker

# 执行docker ps命令，如果不报错，说明安装启动成功
docker ps

5.配置镜像加速

# 创建目录
mkdir -p /etc/docker

# 复制内容
tee /etc/docker/daemon.json <<-'EOF'
{
    "registry-mirrors": [
        "https://docker.m.daocloud.io/",
        "https://hub-mirror.c.163.com",
        "https://dockerproxy.com/",
        "https://mirror.baidubce.com/",
        "https://docker.nju.edu.cn/",
        "https://docker.mirrors.sjtug.sjtu.edu.cn/",
        "https://mirror.ccs.tencentyun.com",
        "https://docker-0.unsee.tech",
        "https://register.liberx.info/",
        "https://docker.registry.cyou/",
        "https://docker-cf.registry.cyou/",
        "https://dockercf.jsdelivr.fyi/",
        "https://docker.jsdelivr.fyi/",
        "https://dockertest.jsdelivr.fyi/",
        "https://mirror.iscas.ac.cn/",
        "https://docker.rainbond.cc/",
        "https://mirror.aliyuncs.com",
        "https://docker.mirrors.ustc.edu.cn/"
    ]
}
EOF

# 重新加载配置
systemctl daemon-reload

# 重启Docker
systemctl restart docker