dockerfile-hardener

What problem does it solve?

Dockerfiles often become bloated and slow, leading to large images, slow builds, and security risks. This Skill provides guidance to trim layers, optimize caching, apply multi-stage builds, and harden the build process to produce smaller, faster, and safer container images.

Core Features & Use Cases

• Identify and fix Dockerfile inefficiencies to reduce image size and improve build speed.
• Recommend multi-stage builds, lean base images, proper layer ordering, and non-root execution for security.
• Apply reproducible build practices and CI-friendly validation across common project patterns.

Quick Start

Analyze a Dockerfile and output a concrete, repeatable plan to shrink the image, optimize layers, and harden the build for CI validation.