> For the complete documentation index, see [llms.txt](https://moekiwisama-1.gitbook.io/minecraft-docker/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://moekiwisama-1.gitbook.io/minecraft-docker/docker-yu-chuan-tong-xu-ni-ji-de-qu-bie.md).

# Docker 与传统虚拟机在实现上的区别

##  原理上的区别

如果我们要在不同虚拟机上运行不同的服务，比如说我想要运行三个服务

* Minecraft 服务器
* 泰拉瑞亚
* 个人网站 （Nginx）

那么传统虚拟机的方式，我们需要在宿主机（Host）上安装 3 台虚拟机（Guest），并且再每台虚拟机中，需要安装操作系统和运行时（例如 Java）

使用抽象的图形表示是这样的

![](/files/-Mcxbzq3GDMjdtyF_bDv)

看到发现，一个虚拟机实例中，包含了应用、运行时、操作系统三个部分，也就是说，在隔离每个应用的前提下，我们多运行了3次操作系统，但是 Docker 可以使我们不运行操作系统，就可以让我们在上面运行我们需要的应用。

![](/files/-McxdT8gnfmDg0Y292hJ)

我们经常可以在其他地方看见类似这样的图片，这些解释可能还是不太好让人理解什么是 Docker，不用担心，我们可以先试试使用一下 Docker，然后回头再来理解这是什么意思。


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