docker: Installing docker on CentOS7

Here is how I installed docker on CentOS7 via yum repository, and run retrieved node.js image.

Install docker via yum repository
# yum -y update
# yum -y install docker

Check docker version
# docker -v
# Docker version 1.13.1, build 7f2769b/1.13.1

Start docker service
# service docker start
Redirecting to /bin/systemctl start docker.service


Retrieve node.js image from official docker repository
# docker pull node
Using default tag: latest
Trying to pull repository docker.io/library/node ...
latest: Pulling from docker.io/library/node
9cc2ad81d40d: Pull complete
e6cb98e32a52: Pull complete
ae1b8d879bad: Pull complete
42cfa3699b05: Pull complete
053cac798c4e: Pull complete
e11ff976ff71: Pull complete
6e754155fada: Pull complete
32d7c2fdf415: Pull complete
7acfea3f0d48: Pull complete
Digest: sha256:b524cc1b5a7f5626fc8196886b81e29b1879051471a5a4a9e8101f3132c22a09
Status: Downloaded newer image for docker.io/node:latest


Check if the image was retrieved
# docker images
REPOSITORY              TAG                 IMAGE ID            CREATED             SIZE
docker.io/node          latest              b18afbdfc458        6 days ago          908 MB
docker.io/hello-world   latest              fce289e99eb9        7 months ago        1.84 kB


Run the image interactively
# docker run -it node
Welcome to Node.js v12.9.0.
Type ".help" for more information.
> console.log("hello docker");
hello docker
undefined
>