Does it support Debian-based images as well as Alpine?

Yes, while Alpine is recommended for maximum savings, the skill provides specific cleanup commands for Debian (apt-get purge and rm -rf /var/lib/apt/lists/*) to minimize the footprint.

How much can this skill reduce my PHP Docker image size?

Typical optimizations result in a 70-75% reduction, often bringing a standard 450MB Debian-based image down to approximately 110MB.

Is it safe to use for production environments?

Absolutely. The skill focuses on removing build-time tools and unnecessary source files that are not required for the application runtime, which also improves container security.

What tools does this skill use for image analysis?

The skill guides you through using 'dive' for interactive layer analysis and 'docker history' to identify exactly where wasted space is occurring.

Can it help with Composer dependencies specifically?

Yes, it provides optimized Composer commands using flags like --no-dev and --optimize-autoloader to ensure only essential production code is included in the final layer.

Docker Image Size Optimizer

Name: Docker Image Size Optimizer
Author: dykyi-roman

bydykyi-roman

•

デプロイメントとDevOps

Reduces PHP Docker image footprints through multi-stage builds, Alpine transitions, and aggressive layer optimization techniques.

This skill provides actionable strategies and automated guidance for shrinking PHP Docker images, helping developers achieve up to a 75% reduction in footprint. By implementing multi-stage builds, switching to Alpine Linux bases, and performing precise dependency cleanup, it ensures faster CI/CD pipelines, lower storage costs, and improved deployment security. It is particularly effective for modern PHP architectures requiring high-performance containerization with minimal overhead.

主な機能

01Automated cleanup of build-time dependencies and virtual packages

02Alpine Linux base image conversion and compatibility guidance

03Multi-stage build configuration for production-only artifacts

04Composer optimization using production flags and autoloader tuning

05Integration with analysis tools like Dive for layer-by-layer size reporting

0645 GitHub stars

ユースケース

01Accelerating CI/CD deployment times by reducing container registry transfer sizes

02Minimizing the security attack surface of production containers by removing build tools

03Reducing cloud storage costs for container registries in microservice environments

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add dykyi-roman/awesome-claude-code optimize-docker-image-size

For use in Claude.ai and ChatGPT

Download Skill