45 lines
792 B
Markdown
45 lines
792 B
Markdown
---
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title: Dockerfile
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type: concept
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tags: [docker, build, image]
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last_updated: 2026-04-17
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---
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## Definition
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Dockerfile 是用于构建 Docker 镜像的声明式配置文件，包含基础镜像选择、文件复制、命令执行等步骤。
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## 基本语法
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```dockerfile
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FROM <base_image>
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USER root
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RUN <command>
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USER <non_root_user>
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```
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## Common Instructions
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- FROM：指定基础镜像
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- RUN：执行命令
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- COPY：复制文件
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- WORKDIR：设置工作目录
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- USER：切换用户
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- ENV：设置环境变量
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- EXPOSE：声明端口
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- CMD：容器启动命令
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## Example
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```dockerfile
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FROM n8nio/n8n:latest
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USER root
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RUN apk update && apk add --no-cache curl wget
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USER node
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```
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## Related Concepts
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- [[Docker]]
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- [[Docker-Image]]
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- [[Docker-Compose]]
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## Related Entities
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- [[n8n]] |