Dockerfile

# Use Node.js 18 Alpine for smaller image size
FROM node:18-alpine

# Set working directory
WORKDIR /app

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm ci --only=production && npm cache clean --force

# Create non-root user for security
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nodejs -u 1001

# Copy source code
COPY --chown=nodejs:nodejs src/ ./src/

# Create logs directory
RUN mkdir -p logs && chown -R nodejs:nodejs logs

# Switch to non-root user
USER nodejs

# Expose port
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD node -e "const http = require('http'); http.get('http://localhost:3000/api/health', (res) => { process.exit(res.statusCode === 200 ? 0 : 1); }).on('error', () => process.exit(1));"

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