We reduced a real Node.js production Docker image from 1.2GB to 78MB

A practical case study demonstrates reducing a Node.js Docker image from 1.2GB to 78MB through six optimization techniques—base image selection, multi-stage builds, and distroless runtime—delivering immediate business value through faster CI/CD pipelines, reduced registry costs, and smaller attack surfaces. For IT organizations, these straightforward improvements directly impact deployment velocity and infrastructure expenses while maintaining application functionality, making this a high-ROI optimization opportunity across containerized workloads. The techniques are immediately applicable to existing projects and require minimal refactoring, offering a measurable way to improve operational efficiency without architectural changes.