> For the complete documentation index, see [llms.txt](https://hezhiqiang.gitbook.io/docker/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hezhiqiang.gitbook.io/docker/os/summary.md).

# 本章小结

本章讲解了典型操作系统镜像的下载和使用。

除了官方的镜像外，在 `Docker Hub` 上还有许多第三方组织或个人上传的 Docker 镜像。

读者可以根据具体情况来选择。一般来说：

* 官方镜像体积都比较小，只带有一些基本的组件。 精简的系统有利于安全、稳定和高效的运行，也适合进行个性化定制。
* 出于安全考虑，几乎所有官方制作的镜像都没有安装 SSH 服务，无法通过用户名和密码直接登录到容器中。


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