# 拉取镜像
docker pull perl:5.40-slim

# 运行一次命令
docker run --rm perl:5.40-slim perl -e 'print "Hello from Docker!\n"'

# 交互式 shell
docker run -it --rm perl:5.40-slim bash

# Dockerfile
FROM perl:5.40-slim

# 安装系统依赖
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    make \
    libssl-dev \
    && rm -rf /var/lib/apt/lists/*

# 安装 cpanm
RUN curl -L https://cpanmin.us | perl - App::cpanminus

# 设置工作目录
WORKDIR /app

# 先复制依赖文件（利用 Docker 缓存）
COPY cpanfile cpanfile
RUN cpanm --notest --installdeps .

# 复制应用代码
COPY . .

# 暴露端口
EXPOSE 3000

# 启动命令
CMD ["perl", "script/myapp", "daemon", "-l", "http://*:3000"]

# 多阶段构建 — 减小最终镜像
# 阶段 1：构建
FROM perl:5.40 AS builder

WORKDIR /build

COPY cpanfile cpanfile
RUN cpanm --notest --installdeps .

COPY . .
RUN perl Makefile.PL && make && make test

# 阶段 2：运行
FROM perl:5.40-slim

# 复制 Perl 库
COPY --from=builder /usr/local/lib/perl5 /usr/local/lib/perl5
COPY --from=builder /usr/local/bin /usr/local/bin

WORKDIR /app
COPY . .

EXPOSE 3000
CMD ["perl", "script/myapp", "daemon", "-l", "http://*:3000"]

FROM perl:5.40-slim

RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc make libssl-dev \
    && rm -rf /var/lib/apt/lists/*

RUN cpanm --notest Carton

WORKDIR /app

COPY cpanfile cpanfile.snapshot ./
RUN carton install --deployment --without develop

COPY . .

EXPOSE 3000
CMD ["carton", "exec", "perl", "script/myapp", "daemon", "-l", "http://*:3000"]

# docker-compose.yml
version: "3.8"

services:
  web:
    build: .
    ports:
      - "3000:3000"
    environment:
      - MOJO_MODE=production
      - DATABASE_URL=dbi:SQLite:dbname=/data/app.db
    volumes:
      - app_data:/data
    restart: unless-stopped
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:3000/health"]
      interval: 30s
      timeout: 5s
      retries: 3

  # 如果使用 PostgreSQL
  db:
    image: postgres:16-alpine
    environment:
      POSTGRES_DB: myapp
      POSTGRES_USER: myapp
      POSTGRES_PASSWORD: secret
    volumes:
      - pg_data:/var/lib/postgresql/data
    ports:
      - "5432:5432"

volumes:
  app_data:
  pg_data:

# 使用非 root 用户
FROM perl:5.40-slim

RUN groupadd -r perl && useradd -r -g perl -d /app perl

RUN apt-get update && apt-get install -y --no-install-recommends \
    ca-certificates \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

COPY --chown=perl:perl . .

USER perl

EXPOSE 3000
CMD ["perl", "script/myapp", "daemon", "-l", "http://*:3000"]

# 限制 CPU 和内存
docker run -d \
    --name myapp \
    --memory=512m \
    --cpus=1.0 \
    --restart=unless-stopped \
    -p 3000:3000 \
    myapp:latest

# nginx.conf
server {
    listen 80;
    server_name example.com;

    location / {
        proxy_pass http://web:3000;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    location /static/ {
        alias /app/public/;
        expires 30d;
        add_header Cache-Control "public, immutable";
    }
}

version: "3.8"

services:
  web:
    build:
      context: .
      dockerfile: Dockerfile
    environment:
      MOJO_MODE: production
      MOJO_SECRET: your-secret-key-here
    expose:
      - "3000"
    restart: unless-stopped
    deploy:
      resources:
        limits:
          memory: 512M
          cpus: '1.0'

  nginx:
    image: nginx:alpine
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./nginx.conf:/etc/nginx/conf.d/default.conf:ro
      - ./public:/app/public:ro
    depends_on:
      - web
    restart: unless-stopped