FROM node:18-alpine

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm install --only=production --silent

# Copy source code
COPY . .

# Expose port
EXPOSE 5000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 \
  CMD node healthcheck.js

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