centos docker installation method

Here only introduces the relatively simple installation method:

1. Install using yum

Better update 1 yum

sudo yum update

Installed directly

sudo yum install -y docker

This method is the simplest, but the version is older:

sudo docker version
Client:
 Version:     1.13.1
 API version:   1.26
 Package version: docker-1.13.1-75.git8633870.el7.centos.x86_64
 Go version:   go1.9.4
 Git commit:   8633870/1.13.1
 Built:      Fri Sep 28 19:45:08 2018
 OS/Arch:     linux/amd64

Server:
 Version:     1.13.1
 API version:   1.26 (minimum version 1.12)
 Package version: docker-1.13.1-75.git8633870.el7.centos.x86_64
 Go version:   go1.9.4
 Git commit:   8633870/1.13.1
 Built:      Fri Sep 28 19:45:08 2018
 OS/Arch:     linux/amd64
 Experimental:  false

2. Use a script to install

docker has provided scripts for us to install the latest version of docker maintained by the docker community:

curl -fsSL https://get.docker.com -o get-docker.sh
sudo sh get-docker.sh

The script automatically fetches docker.repo and installs it.

docker version
Client:
 Version:      18.06.1-ce
 API version:    1.38
 Go version:    go1.10.3
 Git commit:    e68fc7a
 Built:       Tue Aug 21 17:23:03 2018
 OS/Arch:      linux/amd64
 Experimental:   false
Server:
 Engine:
 Version:     18.06.1-ce
 API version:   1.38 (minimum version 1.12)
 Go version:    go1.10.3
 Git commit:    e68fc7a
 Built:      Tue Aug 21 17:25:29 2018
 OS/Arch:     linux/amd64
 Experimental:   false

conclusion