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Baohua Yang
2026-02-21 10:47:37 -08:00
parent 47cfc173a6
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07_dockerfile/7.7_arg.md
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@@ -242,20 +242,3 @@ FROM ${BASE_IMAGE}
```
---
### 本章小结
| 要点 | 说明 |
|------|------|
| **作用** | 定义构建时变量 |
| **语法** | `ARG NAME=value` |
| **覆盖** | `docker build --build-arg NAME=value` |
| **作用域** | FROM 之后需要重新声明 |
| **vs ENV** | ARG 仅构建时，ENV 构建+运行时 |
| **安全** | 不要存储敏感信息 |
### 延伸阅读
- [ENV 设置环境变量](7.6_env.md)：运行时环境变量
- [FROM 指令](../04_image/4.5_build.md)：基础镜像指定
- [多阶段构建](7.17_multistage_builds.md)：复杂构建场景