docker-init

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Original

English

🇨🇳

Translation

Chinese

Docker Environment Initialization Skill

Docker环境初始化技能

Overview

概述

This skill creates a complete Docker environment for a project, including:

Dockerfile optimized for the application type
docker-compose.yaml with all required services
.dockerignore for efficient builds
.env.example for environment configuration

本技能可为项目创建完整的Docker环境，包括：

针对应用类型优化的Dockerfile
包含所有必要服务的docker-compose.yaml
用于高效构建的.dockerignore
用于环境配置的.env.example

Activation

适用场景

Use this skill when:

Setting up Docker for a new project
Migrating an existing project to Docker
Adding Docker support to a codebase

在以下场景中使用本技能：

为新项目搭建Docker环境
将现有项目迁移至Docker
为代码库添加Docker支持

Process

操作流程

1. Detect Project Type

1. 检测项目类型

Analyze the project to determine:

Primary language (Node.js, Python, PHP, Go, etc.)
Framework (Laravel, Express, Django, etc.)
Required services (database, cache, queue)
Existing configuration files

分析项目以确定：

主要编程语言（Node.js、Python、PHP、Go等）
框架（Laravel、Express、Django等）
所需服务（数据库、缓存、队列）
现有配置文件

2. Consult Documentation

2. 查阅文档

Read relevant documentation:

```
02-dockerfile.md
```
for Dockerfile patterns
```
03-compose-fundamentals.md
```
for compose structure
```
05-databases.md
```
if database needed
```
10-architecture.md
```
for folder structure

阅读相关文档：

```
02-dockerfile.md
```
用于Dockerfile编写模式
```
03-compose-fundamentals.md
```
用于compose结构
```
05-databases.md
```
（若需要数据库）
```
10-architecture.md
```
用于文件夹结构

3. Generate Files

3. 生成文件

Dockerfile

dockerfile

undefined

dockerfile

undefined

Multi-stage build pattern

FROM base AS builder

Build steps

FROM base AS production

Production setup


Key elements:
- Use appropriate base image
- Multi-stage build for smaller images
- Non-root user for security
- Health check
- Proper COPY order for caching


核心要素：
- 使用合适的基础镜像
- 多阶段构建以减小镜像体积
- 使用非root用户保障安全
- 健康检查
- 合理的COPY顺序以利用缓存

docker-compose.yaml

yaml

services:
  app:
    build: .
    # Configuration

  db:
    image: postgres:16
    # Configuration

volumes:
  # Named volumes

networks:
  # Network configuration

Key elements:

No version field (modern compose)
Health checks
Dependencies with conditions
Named volumes
Proper networking

yaml

services:
  app:
    build: .
    # Configuration

  db:
    image: postgres:16
    # Configuration

volumes:
  # Named volumes

networks:
  # Network configuration

核心要素：

无version字段（现代compose）
健康检查
带条件的依赖配置
命名卷
合理的网络配置

.dockerignore

node_modules/
.git/
.env
*.log

node_modules/
.git/
.env
*.log

.env.example

bash

undefined

bash

undefined

Application

NODE_ENV=development PORT=3000

Database

DB_HOST=db DB_USER=appuser DB_PASSWORD=

undefined

DB_HOST=db DB_USER=appuser DB_PASSWORD=

undefined

4. Provide Instructions

4. 提供操作说明

Include:

How to start services
Available commands
Environment setup
Development workflow

包含：

如何启动服务
可用命令
环境设置
开发工作流

Templates by Project Type

按项目类型划分的模板

Node.js

dockerfile

FROM node:20-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
USER node
EXPOSE 3000
CMD ["node", "src/index.js"]

dockerfile

FROM node:20-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
USER node
EXPOSE 3000
CMD ["node", "src/index.js"]

Python

dockerfile

FROM python:3.12-slim
WORKDIR /app
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
COPY . .
USER nobody
EXPOSE 8000
CMD ["python", "app.py"]

dockerfile

FROM python:3.12-slim
WORKDIR /app
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
COPY . .
USER nobody
EXPOSE 8000
CMD ["python", "app.py"]

PHP/Laravel

dockerfile

FROM php:8.3-fpm-alpine
WORKDIR /var/www/html
RUN apk add --no-cache postgresql-dev && \
    docker-php-ext-install pdo pdo_pgsql
COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
COPY . .
RUN composer install --no-dev --optimize-autoloader
EXPOSE 9000
CMD ["php-fpm"]

dockerfile

FROM php:8.3-fpm-alpine
WORKDIR /var/www/html
RUN apk add --no-cache postgresql-dev && \
    docker-php-ext-install pdo pdo_pgsql
COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
COPY . .
RUN composer install --no-dev --optimize-autoloader
EXPOSE 9000
CMD ["php-fpm"]

Go

dockerfile

FROM golang:1.22-alpine AS builder
WORKDIR /app
COPY go.* ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 go build -o main .

FROM alpine:latest
COPY --from=builder /app/main .
EXPOSE 8080
CMD ["./main"]

dockerfile

FROM golang:1.22-alpine AS builder
WORKDIR /app
COPY go.* ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 go build -o main .

FROM alpine:latest
COPY --from=builder /app/main .
EXPOSE 8080
CMD ["./main"]

Output

输出内容

Generated files:

```
Dockerfile
```
```
docker-compose.yaml
```
(or
```
compose.yaml
```
)
```
.dockerignore
```
```
.env.example
```
```
docker/
```
folder for additional configs (if needed)

生成的文件包括：

```
Dockerfile
```
```
docker-compose.yaml
```
（或
```
compose.yaml
```
）
```
.dockerignore
```
```
.env.example
```
```
docker/
```
文件夹（用于存放额外配置，如有需要）