A developer reduced a production Node.js Docker image from 1.2GB to 78MB, achieving a 94% reduction through six optimization techniques. The process demonstrates how teams can eliminate container bloat that slows CI, increases attack surfaces, and inflates registry costs for applications that only produce 4MB of compiled JavaScript.

The key optimizations include switching from the full Node base image to slim variants, implementing multi-stage builds to separate development and runtime environments, and leveraging layer caching. These approaches, combined with using Alpine for the runtime stage and Google's distroless images, dramatically reduce image size while maintaining functionality.

Beyond the size reduction, the optimized images offer significant security benefits with fewer CVEs and faster cold starts. While some approaches like using scratch images add complexity, the distroless option provides "95% of the benefit with none of the pain." Most teams can implement these optimizations in a single afternoon, eliminating the silent tax of oversized containers.