点击setting，点击docker Engine 进行编辑

{
  "registry-mirrors":["https://registry.docker-cn.com","http://hub-mirror.c.163.com","https://4jup2u41.mirror.aliyuncs.com","https://docker.mirrors.ustc.edu.cn"],
  "builder": {
    "gc": {
      "defaultKeepStorage": "20GB",
      "enabled": true
    }
  },
  "experimental": false,
  "features": {
    "buildkit": true
  }
}

这就是要加入的数据源部分

  "registry-mirrors":["https://registry.docker-cn.com","http://hub-mirror.c.163.com","https://4jup2u41.mirror.aliyuncs.com","https://docker.mirrors.ustc.edu.cn"]