2023-08-28：修改docker默认源，存储路径，默认网段

docker安装

采用yum方式，参照清华镜像源中提供的方法。链接：docker-ce | 镜像站使用帮助 | 清华大学开源软件镜像站 | Tsinghua Open Source Mirror

修改默认源

# 创建并编辑daemon.json文件；
vim /etc/docker/daemon.josn

{
  "registry-mirrors": [
    "http://hub-mirror.c.163.com",
    "https://docker.mirrors.ustc.edu.cn",
    "https://jvasc6o8.mirror.aliyuncs.com",
    "http://f1361db2.m.daocloud.io"
  ],
  "data-root": "/opt/i5/docker",    # docker数据目录；
  "exec-opts": ["native.cgroupdriver=systemd"],
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m"
  },
  "storage-driver": "overlay2",
  "storage-opts": [
    "overlay2.override_kernel_check=true"
  ],
    "max-concurrent-downloads": 6,
    "max-concurrent-uploads": 10,
  "bip":"40.40.40.1/24"  # docker网段；
}