centos7 yum安装docker engine
参考官方文档 https://docs.docker.com/engine/installation/linux/centos/
1、检查内核版本,最小要求 3.10
$ uname -r
2、确认存在最新的yum包
$ sudo yum update
3、Add the yum repo
$ sudo tee /etc/yum.repos.d/docker.repo <<-'EOF' [dockerrepo] name=Docker Repository baseurl=https://yum.dockerproject.org/repo/main/centos/$releasever/ enabled=1 gpgcheck=1 gpgkey=https://yum.dockerproject.org/gpg EOF
4、Install the Docker package.
$ sudo yum install docker-engine
5、Start the Docker daemon
$ sudo service docker start
6、验证
$ sudo docker run hello-world
出现如上提示说明安装正确