Docker Builder Image

This tool models Docker image builds to help engineers plan containerization with meaningful, pre-build metrics. By inputting a base image, Dockerfile path, and build context size, users obtain estimates such as final image size, total build time, and the number of layers.
Conceptually, it treats each Dockerfile instruction as a step and applies BuildKit-like caching behaviors to approximate output changes when options change. It supports multi-stage builds and selective caching, enabling side-by-side comparisons of design choices before committing to a design.
Who benefits: developers optimizing images, DevOps practitioners budgeting CI/CD resource use, and platform teams standardizing image standards across projects. The tool provides a clear rationale for recommendations, so teams can justify base-image choices, ARG usage, and RUN consolidation.
Core value: rapid, repeatable planning for container images, with concrete outputs such as size, time, and optimization actions. Core features include input validation, performance estimates, recommended changes, and a ready-to-share report for stakeholder reviews. Use cases include lean image design and cost-aware CI planning.