Docker Tutorial

• Docker Tutorial
• Docker Architecture

Docker Installation

• Ubuntu Docker Installation
• Debian Docker Installation
• CentOS Docker Installation
• Windows Docker Installation
• MacOS Docker Installation

How to use Docker

• Docker Hello World
• Docker Container
• Docker Image
• Docker Container Connection
• Docker Rpository
• Docker Dockerfile
• Docker Compose
• Docker Machine
• Docker Swarm

Docker Instance

• Docker install Ubuntu
• Docker install CentOS
• Docker install Nginx
• Docker install Node.js
• Docker install PHP
• Docker install MySQL
• Docker install Tomcat
• Docker install Python
• Docker install Redis
• Docker install MongoDB
• Docker install Apache

Docker Container Lifecycle Command

• Docker run command
• Docker start/stop/restart commands
• Docker kill command
• Docker rm command
• Docker pause/unpause command
• Docker create command
• Docker exec command

Docker Container Operation Command

• Docker ps command
• Docker inspect command
• Docker top command
• Docker attach command
• Docker events command
• Docker logs command
• Docker wait command
• Docker export command
• Docker port command

Docker Container rootfs Command

• Docker commit command
• Docker cp command
• Docker diff command

Docker Mirror Repository Command

• Docker login/logout command
• Docker pull command
• Docker push command
• Docker search command

Docker Local Image Management Command

• Docker images command
• Docker rmi command
• Docker tag command
• Docker build command
• Docker history command
• Docker save command
• Docker load command
• Docker import command

Docker info|version Command

• Docker info command
• Docker version command

CentOS Docker installation

Docker supports the following 64-bit CentOS versions:

• CentOS 7
• CentOS 8
• higher version...

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Automatic installation using official installation script

The installation command is as follows:

curl -fsSL https://get.docker.com | bash -s docker --mirror Aliyun

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Manual installation

uninstall old version

Older Docker versions were called docker or docker-engine. If these programs are installed, uninstall them and their associated dependencies.

$ sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

Install Docker Engine-Community

Install using Docker repository

Before installing Docker Engine-Community for the first time on a new host, you need to set up the Docker repository. After that, you can install and update Docker from the repository.

Set up warehouse

Install the required packages. yum-utils provides yum-config-manager, and the device mapper storage driver requires device-mapper-persistent-data and lvm2.

$ sudo yum install -y yum-utils \
  device-mapper-persistent-data \
  lvm2

Use the following commands to set up a stable repository.

$ sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo

Install Docker Engine-Community

Install the latest versions of Docker Engine-Community and containerd, or go to the next step to install a specific version:

$ sudo yum install docker-ce docker-ce-cli containerd.io

Select Yes if you are prompted to accept the GPG key.

Docker is not started by default after installation. And the docker user group has been created, but there are no users under the user group.

To install a specific version of Docker Engine-Community, list the available versions in the repository, then select and install:

1. List and sort the versions available in your repository. This example sorts the results by version number (highest to lowest).

$ yum list docker-ce --showduplicates | sort -r

docker-ce.x86_64 3:18.09.1-3.el7 docker-ce-stable
docker-ce.x86_64 3:18.09.0-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.1.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.0.ce-3.el7 docker-ce-stable

2. Install a specific version by its full package name, which is the package name (docker-ce) plus the version string (second column), from the first colon (:) to the first hyphens, separated by a hyphen (-). For example: docker-ce-18.09.1.

$ sudo yum install docker-ce-<VERSION_STRING> docker-ce-cli-<VERSION_STRING> containerd.io

Start Docker.

$ sudo systemctl start docker

Verify that Docker Engine-Community is installed correctly by running the hello-world image.

$ sudo docker run hello-world

uninstall docker

Remove the installation package:

yum remove docker-ce

Delete images, containers, configuration files, etc.:

rm -rf /var/lib/docker