Node.js Container Optimization

About

This skill provides Claude with expert architectural knowledge for building high-performance Node.js Docker containers. It facilitates the transition from bloated development images to lean, production-ready containers—often reducing image sizes from nearly 1GB down to under 100MB. By utilizing Alpine Linux, multi-stage builds, BuildKit cache mounts, and production-only dependency pruning, this skill helps developers improve CI/CD build speeds, reduce cloud storage costs, and enhance the security posture of their applications through non-root user configurations and reduced attack surfaces.

Key Features

• 3 GitHub stars
• Advanced dependency caching using BuildKit mount types
• Framework-specific optimization for Next.js, NestJS, and Express
• Extreme image size reduction from ~900MB to under 100MB
• Security-focused non-root user and distroless image configurations
• Multi-stage build orchestration for minimal production footprints

Use Cases

• Refactoring bloated Node.js Dockerfiles into slim, high-performance Alpine images
• Accelerating CI/CD pipelines by implementing persistent package manager caching
• Securing enterprise Node.js applications using distroless runtime environments