centos7安装docker

1、删除旧版本
sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

2、安装依赖包
sudo yum install -y yum-utils \
  device-mapper-persistent-data \
  lvm2

3、配置yum仓库
sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo

4、安装：
selinux=disabled
systemctl disable firewalld


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


5、测试：
systemctl start docker
systemctl enable docker
docker run hello-world
docker info

制作容器：
docker run -it nginx
查看容器：

docker ps

docker inspect +容器ID