# 容器

Docker 利用容器來執行應用。

容器是從映像檔建立的執行實例。它可以被啟動、開始、停止、刪除。每個容器都是相互隔離的、保證安全的平台。

可以把容器看做是一個簡易版的 Linux 環境（包括 root 使用者權限、程式空間、使用者空間和網路空間等）和在其中執行的應用程式。

\*註：映像檔是唯讀的，容器在啟動的時候建立一層可寫層作為最上層。


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://philipzheng.gitbook.io/docker_practice/basic_concept/container.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.