Writing Dockerfiles

Create production-grade Dockerfiles with multi-stage builds, security hardening, and language-specific optimizations.

When to Use This Skill

Invoke when:

• "Write a Dockerfile for [Python/Node.js/Go/Rust] application"
• "Optimize this Dockerfile to reduce image size"
• "Use multi-stage build for..."
• "Secure Dockerfile with non-root user"
• "Use distroless base image"
• "Add BuildKit cache mounts"
• "Prevent secrets from leaking in Docker layers"

Quick Decision Framework

Ask three questions to determine the approach: