Is security a priority in the generated Dockerfiles?

Absolutely; the skill defaults to using non-root users, vulnerability scanning tools like Trivy, and minimal base images to significantly reduce the attack surface.

How does this skill reduce Docker image size?

It utilizes multi-stage builds and distroless images to separate build-time dependencies from the runtime environment, often reducing image sizes by 80-95%.

Can it improve build speeds?

Yes, by utilizing BuildKit cache mounts and optimized layer ordering, it maximizes cache hits and eliminates redundant package downloads across builds.

Which programming languages are supported?

The skill includes specific, optimized patterns for Python, Node.js, Go, Rust, and Java, including specialized package manager configurations.

Does it support secret management?

Yes, it implements BuildKit secret mounts to ensure sensitive credentials like API tokens are never stored in the image layers or history.

Dockerfile Optimization & Security

Name: Dockerfile Optimization & Security
Author: ancoleman

byancoleman

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158

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Deployment & DevOps

Generates production-grade, multi-stage Dockerfiles optimized for size, performance, and security across multiple programming languages.

This skill empowers Claude to create high-performance container configurations by implementing industry best practices such as multi-stage builds, BuildKit cache mounts, and distroless runtime images. It provides domain-specific patterns for Python, Node.js, Go, and Rust, ensuring that applications are not only containerized but also hardened against security vulnerabilities and optimized for fast CI/CD pipelines. Whether you are migrating a legacy Dockerfile or starting a new microservice, this skill provides the decision frameworks and security patterns necessary for enterprise-ready deployments.

Key Features

01Automated .dockerignore configuration and layer optimization

02Security hardening with non-root users and distroless base images

03BuildKit integration for advanced caching and secret management

04158 GitHub stars

05Language-specific optimizations for Python, Node.js, Go, and Rust

06Multi-stage build orchestration for minimal image footprints

Use Cases

01Migrating standard Dockerfiles to high-performance BuildKit-enabled configurations

02Reducing Docker image sizes for faster deployments and lower storage costs

03Implementing security best practices for containerized production applications

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add ancoleman/ai-design-components writing-dockerfiles

For use in Claude.ai and ChatGPT

Download Skill