FROM node:20-alpine

WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm ci --only=production

# Copy source code
COPY src/ ./src/

# Expose port
EXPOSE 3002

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD node -e "require('http').get('http://localhost:3002/api/health', (r) => { process.exit(r.statusCode === 200 ? 0 : 1) })"

# Start server
CMD ["node", "--env-file-if-exists=.env", "src/server.js"]