一.安装dockor

1.卸载旧版本的dockor

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

2.安装依赖环境

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

3.添加dockor软件源

yum-config-manager \
      --add-repo  \
      https://download.docker.com/linux/centos/docker-ce.repo

4.设置国内dockor源,让下载更加快速

sudo sed -i \
    's+download.docker.com+mirrors.tuna.tsinghua.edu.cn/docker-ce+' \
    /etc/yum.repos.d/docker-ce.repo

5.安装dockor

yum install -y docker-ce

6.查看dockor版本

docker -v

二.dockor相关命令

systemctl start docker    #启动docker服务
systemctl stop docker     #停止docker服务 
systemctl restart docker  #重启docker服务 
systemctl status docker   #查看docker服务状态
systemctl enable docker   #开机启动docker服务
systemctl disable docker  #关闭开机启动docker服务

三.设置dockor镜像加速器

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://88y9upwp.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker