FROM node:18-alpine

# Set working directory
WORKDIR /app

# Copy package files
COPY public/package*.json ./

# Install dependencies (production only)
RUN npm ci --omit=dev

# Copy application code
COPY public .

# Expose HF Spaces port (7860)
EXPOSE 7860

# Set production environment
ENV NODE_ENV=production
ENV PORT=7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
  CMD node -e "require('http').get('http://localhost:7860/health', (r) => {if (r.statusCode !== 200) throw new Error(r.statusCode)})"

# Start application
CMD ["npm", "start"]