CentOs设置国内源
1、切用户、切到原文件件
su root

cd /etc/yum.repos.d/

2、下载源文件
wget http://mirrors.aliyun.com/repo/Centos-7.repo

3、重命名
mv CentOS-Base.repo CentOS-Base.repo.bak

mv Centos-7.repo CentOS-Base.repo

4、更新缓存
yum clean all

yum makecache

yum update

yum install net-tools

yum install -y yum-utils

yum provides ‘*/applydeltarpm’
yum install deltarpm -y

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

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

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

systemctl start docker

mkdir -p /etc/docker

tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": [
    "https://m.daocloud.io/docker.io/library/python:3.10.14-bookworm",
    "https://78mwycsx.mirror.aliyuncs.com",
    "https://docker.mirrors.ustc.edu.cn",
    "http://mirrors.ustc.edu.cn/"
  ]
}
EOF

systemctl restart docker