mcp-rubber-duck

# Multi-stage build for optimal size FROM node:20-alpine AS builder # Set working directory WORKDIR /app # Copy package files COPY package*.json ./ # Install dependencies RUN npm ci # Copy source code COPY . . # Build the application RUN npm run build # Production stage FROM node:20-alpine # Install dumb-init for proper signal handling RUN apk add --no-cache dumb-init # Create app user RUN addgroup -g 1001 -S nodejs && \ adduser -S nodejs -u 1001 # Set working directory WORKDIR /app # Copy package files COPY package*.json ./ # Install production dependencies only RUN npm ci --only=production && \ npm cache clean --force # Copy built application from builder COPY --from=builder /app/dist ./dist # Copy configuration examples COPY config/config.example.json ./config/ # Change ownership RUN chown -R nodejs:nodejs /app # Switch to non-root user USER nodejs # Expose stdio EXPOSE 3000 # Add healthcheck for monitoring HEALTHCHECK --interval=30s --timeout=10s --retries=3 --start-period=30s \ CMD node -e "process.exit(0)" || exit 1 # Use dumb-init to handle signals properly ENTRYPOINT ["dumb-init", "--"] # Start the application CMD ["node", "dist/index.js"]