[origalom@origalom ~]$ sudo yum install -y yum-utils device-mapper-persistent-data lvm2

[origalom@origalom ~]$ sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

[origalom@origalom ~]$ sudo yum-config-manager --enable docker-ce-edge

[origalom@origalom ~]$ sudo yum-config-manager --enable docker-ce-test

[origalom@origalom ~]$ sudo yum-config-manager --disable docker-ce-edge  # 禁用 

[origalom@origalom ~]$ sudo yum install docker-ce

[origalom@origalom ~]$ yum list docker-ce --showduplicates | sort -r    # 查找可用版本

[origalom@origalom ~]$ sudo yum install docker-ce-<VERSION STRING> # 安装指定版本

[origalom@origalom ~]$ sudo systemctl start docker

[origalom@origalom ~]$ sudo docker run hello-world

Unable to find image 'hello-world:latest' locally

latest: Pulling from library/hello-world

ca4f61b1923c: Pull complete

Digest: sha256:97ce6fa4b6cdc0790cda65fe7290b74cfebd9fa0c9b8c38e979330d547d22ce1

Status: Downloaded newer image for hello-world:latest

Hello from Docker!

This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:

 . The Docker client contacted the Docker daemon.

 . The Docker daemon pulled the "hello-world" image from the Docker Hub.

    (amd64)

 . The Docker daemon created a new container from that image which runs the

    executable that produces the output you are currently reading.

 . The Docker daemon streamed that output to the Docker client, which sent it

    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:

 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:

 https://cloud.docker.com/

For more examples and ideas, visit:

 https://docs.docker.com/engine/userguide/