Docker | Install Docker under Linux

1. Uninstall the old version

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

2. Install the yum-utils package (provide the yum-config-manager utility)

yum install -y yum-utils

3. Set up a stable repository (using Alibaba Cloud mirroring)

yum-config-manager \
    --add-repo \
    http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

Fourth, update the cache

yum makecache fast

5. Install the latest version of Docker Engine and container, or go to the next step to install a specific version

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

Six, start Docker

systemctl start docker

Seven, configure Docker

Docker's default mirror is a bit slow in terms of domestic origin, so you can configure the domestic mirror source to improve the pull speed

Alibaba Cloud Mirror Service Reference: https://cr.console.aliyun.com/cn-shanghai/instances/mirrors

1. Create a directory

mkdir -p /etc/docker

2. Create a mirror configuration file

vi /etc/docker/daemon.json

3. Add a mirror to the configuration file

{
    
    
 "registry-mirrors":["http://hub-mirror.c.163.com"] 
}

4. Reload the file and restart docker

sudo systemctl daemon-reload
systemctl restart docker

PS: some other accelerated sites

https://registry.docker-cn.com
http://hub-mirror.c.163.com
https://mirror.ccs.tencentyun.com

Eight, uninstall Docker

1. Uninstall Docker Engine, CLI and Containerd packages

yum remove docker-ce docker-ce-cli containerd.io

2. The images, containers, volumes or custom configuration files on the host will not be deleted automatically. To delete all images, containers and volumes

rm -rf /var/lib/docker