docker安装

centos7安装docker

#卸载系统之前的docker 
sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine
                  
sudo yum install -y yum-utils

# 配置镜像
sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo

#安装docker    
sudo yum install docker-ce docker-ce-cli containerd.io

#启动docker服务
sudo systemctl start docker 

#查看版本，是否安装成功
docker -v

#配置镜像加速
sudo mkdir -p /etc/docker

sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://g2i6jdnj.mirror.aliyuncs.com"]
}
EOF

#重启服务
sudo systemctl daemon-reload
sudo systemctl restart docker