FROM node:20-alpine

WORKDIR /usr/src/app

# Install dependencies for pdf-parse and other native modules
RUN apk add --no-cache python3 make g++

# Copy package files
COPY package*.json ./

# Install production dependencies
RUN npm install --omit=dev

# Copy application code
COPY . .

# Create logs directory
RUN mkdir -p logs

# Expose port
EXPOSE 3003

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
  CMD wget --no-verbose --tries=1 --spider http://localhost:3003/api/health || exit 1

# Start the application
CMD ["node", "server.js"]