dockerfile-generator

Dockerfile Generator

Overview

This skill provides a comprehensive workflow for generating production-ready Dockerfiles with security, optimization, and best practices built-in. Generates multi-stage builds, security-hardened configurations, and optimized layer structures with automatic validation and iterative error fixing.

Key Features:

• Multi-stage builds for optimal image size (50-85% reduction)
• Security hardening (non-root users, minimal base images, no secrets)
• Layer caching optimization for faster builds
• Language-specific templates (Node.js, Python, Go, Java)
• Automatic .dockerignore generation
• Integration with dockerfile-validator for validation
• Iterative validation and error fixing (minimum 1 iteration if errors found)
• Local references plus docs lookup fallback chain for framework-specific patterns

When to Use This Skill

Invoke this skill when:

• Creating new Dockerfiles from scratch
• Containerizing applications (Node.js, Python, Go, Java, or other languages)
• Implementing multi-stage builds for size optimization
• Converting existing Dockerfiles to best practices
• Generating production-ready container configurations
• Optimizing Docker builds for security and performance
• The user asks to "create", "generate", "build", or "write" a Dockerfile
• Implementing containerization for microservices
• Setting up CI/CD pipeline container builds

Trigger Phrases

Use this skill immediately when the request contains phrasing like:

• "Generate a production Dockerfile for my app"
• "Create a multi-stage Dockerfile for <language/framework>"
• "Containerize this service with security best practices"
• "Optimize this Dockerfile for size and build speed"
• "Write Dockerfile and .dockerignore for deployment"

Do NOT Use This Skill For

• Validating existing Dockerfiles (use dockerfile-validator instead)
• Building or running containers (use docker build/run commands)
• Debugging running containers (use docker logs, docker exec)
• Managing Docker images or registries