FROM node:20-alpine

WORKDIR /app

# Copy package files and install dependencies
COPY package.json ./
RUN npm install --production

# Copy application source
COPY . .

# Expose API port
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD wget --no-verbose --tries=1 --spider http://localhost:3000/api/health || exit 1

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