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Fix ascii figures

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Baohua Yang
2026-02-21 10:59:17 -08:00
parent 5ae315c9dd
commit ad68b2d973
7 changed files with 89 additions and 73 deletions
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04_image/4.7_internal.md
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@@ -25,16 +25,18 @@ Docker 镜像并不是一个单纯的文件，而是由一组文件系统叠加
当容器启动时，Docker 会在镜像的最上层，添加一个新的**可写层（Writable Layer）**，通常被称为**容器层**。
```
┌──────────────────────────────────────────────┐
│ 容器层 (可写, Writable Container Layer) │ <-- 所有的写操作都在这里
├──────────────────────────────────────────────┤
│ 镜像层 (只读, Read-only Image Layer) │
├──────────────────────────────────────────────┤
│ 镜像层 (只读, Read-only Image Layer) │
├──────────────────────────────────────────────┤
│ 基础镜像层 (只读, Base Image Layer) │
└──────────────────────────────────────────────┘
```mermaid
flowchart TD
subgraph Container ["运行中的容器"]
direction TB
L4["容器层 (可写, Writable Container Layer)"]
L3["镜像层 (只读, Read-only Image Layer)"]
L2["镜像层 (只读, Read-only Image Layer)"]
L1["基础镜像层 (只读, Base Image Layer)"]
L4 --- L3 --- L2 --- L1
end
Note["所有的写操作都在容器层这里"] -.-> L4
```
* **读取文件**：当容器需要读取文件时，Docker 会从最上层（容器层）开始向下层（镜像层）寻找，直到找到该文件为止。