docker-patterns

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---
name: docker-patterns
description: 用于本地开发的Docker和Docker Compose模式，包括容器安全、网络、卷策略和多服务编排。
origin: ECC
---

# Docker 模式

适用于容器化开发的 Docker 和 Docker Compose 最佳实践。

## 何时启用

* 为本地开发设置 Docker Compose
* 设计多容器架构
* 排查容器网络或卷问题
* 审查 Dockerfile 的安全性和大小
* 从本地开发迁移到容器化工作流

## 用于本地开发的 Docker Compose

### 标准 Web 应用栈

```yaml
# docker-compose.yml
services:
  app:
    build:
      context: .
      target: dev                     # Use dev stage of multi-stage Dockerfile
    ports:
      - "3000:3000"
    volumes:
      - .:/app                        # Bind mount for hot reload
      - /app/node_modules             # Anonymous volume -- preserves container deps
    environment:
      - DATABASE_URL=postgres://postgres:postgres@db:5432/app_dev
      - REDIS_URL=redis://redis:6379/0
      - NODE_ENV=development
    depends_on:
      db:
        condition: service_healthy
      redis:
        condition: service_started
    command: npm run dev

  db:
    image: postgres:16-alpine
    ports:
      - "5432:5432"
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres
      POSTGRES_DB: app_dev
    volumes:
      - pgdata:/var/lib/postgresql/data
      - ./scripts/init-db.sql:/docker-entrypoint-initdb.d/init.sql
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U postgres"]
      interval: 5s
      timeout: 3s
      retries: 5

  redis:
    image: redis:7-alpine
    ports:
      - "6379:6379"
    volumes:
      - redisdata:/data

  mailpit:                            # Local email testing
    image: axllent/mailpit
    ports:
      - "8025:8025"                   # Web UI
      - "1025:1025"                   # SMTP

volumes:
  pgdata:
  redisdata:
```

### 开发与生产 Dockerfile

```dockerfile
# Stage: dependencies
FROM node:22-alpine AS deps
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci

# Stage: dev (hot reload, debug tools)
FROM node:22-alpine AS dev
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
EXPOSE 3000
CMD ["npm"

Use this skill

{
  "model": "gpt-4o-mini",
  "skill": "imp-f2f023c2-cb15-494a-8819-7f303fcdef25",
  "messages": [{ "role": "user", "content": "…" }]
}

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