# Use Node.js 20 slim image
FROM node:20-slim

# Set working directory
WORKDIR /app

# 1. Install system dependencies required by Playwright (系统库变动极少，缓存命中率极高)
RUN apt-get update && apt-get install -y \
    libnss3 \
    libnspr4 \
    libatk1.0-0 \
    libatk-bridge2.0-0 \
    libcups2 \
    libdrm2 \
    libdbus-1-3 \
    libxcb1 \
    libxkbcommon0 \
    libx11-6 \
    libxcomposite1 \
    libxdamage1 \
    libxext6 \
    libxfixes3 \
    libxrandr2 \
    libgbm1 \
    libpango-1.0-0 \
    libcairo2 \
    libasound2 \
    libatspi2.0-0 \
    wget \
    gnupg \
    --no-install-recommends && \
    rm -rf /var/lib/apt/lists/*

# 2. Copy ONLY package files first (关键步骤：先只复制依赖配置文件)
COPY package.json package-lock.json ./

# 3. Install npm dependencies AND Playwright browsers together
# 如果 package.json 没变，这一步会直接从缓存读取，秒完成！
RUN npm ci && \
    npx playwright install chromium && \
    npx playwright install-deps

# 4. Copy platform code (最后复制代码，因为代码经常变)
# 注意：确保你的 .dockerignore 文件里包含了 node_modules
COPY . .

# Set environment variables
ENV NODE_ENV=production
ENV HEADLESS=true

ENV PORT=7860

# Expose port  huggingface
EXPOSE 7860

# Default command
CMD ["npm", "run", "start:prod"]