FROM node:20-bookworm-slim

WORKDIR /app

# Install dependencies first (layer-cached until package.json changes)
COPY package*.json ./
RUN npm ci --omit=dev

# Install Chromium and all required system dependencies via Playwright's installer
RUN npx playwright install chromium --with-deps

# Copy application source
COPY src/ ./src/
COPY .env.example ./

ENV NODE_ENV=production

EXPOSE 3000

HEALTHCHECK --interval=30s --timeout=10s --start-period=25s --retries=3 \
  CMD node -e "\
    const http = require('http'); \
    http.get('http://localhost:3000/health', (r) => { \
      process.exit(r.statusCode === 200 ? 0 : 1); \
    }).on('error', () => process.exit(1));"

CMD ["node", "src/server.js"]