yum updateyum install -y yum-utils device-mapper-persistent-data lvm2yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repoyum list docker-ce --showduplicates | sort -ryum install docker-ce

加入启动

systemctl start dockersystemctl enable docker

验证安装完成

docker version

 镜像安装目录

/var/lib/docker/image/

 

安装openresty

docker pull openresty/openresty#-v参数，冒号前为宿主机目录，必须为绝对路径，冒号后为镜像内挂载的路径；指定为只读可以用：rodocker run -d --name="nginx" -p 8080:80 -v /data/openresty/nginx/conf/nginx.conf:/usr/local/openresty/nginx/conf/nginx.conf:ro -v /data/openresty/nginx/logs:/usr/local/openresty/nginx/logs openresty/openrestydocker kill nginx && docker rm nginx