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This article introduces you how to install Docker in linux, the content is very detailed, interested friends can refer to, hope to be helpful to you.

Three core concepts of Docker: image, container and warehouse

Image: similar to the image of a virtual machine, as the saying goes, the installation file.

Containers: similar to a lightweight sandbox, containers create application running instances from images, which can be started, started, stopped, and deleted, and these containers are isolated and invisible from each other.

Repository: similar to a code repository, it is a centralized place for Docker to store image files.

A brief introduction to installing Docker on CentOS.

Prerequisites:

64-bit system

Kernel 3.10 +

1. Check the kernel version and return a value greater than 3.10.

$uname-r

two。 Users who use sudo or root privileges log in to the terminal.

3. Make sure yum is up to date

$yum update

4. Add yum Warehouse

Tee / etc/yum.repos.d/docker.repo

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