Docker

This skill gives Claude the knowledge to containerize your application with Docker, from writing optimized Dockerfiles to orchestrating multi-container setups with Docker Compose. It covers the practical stuff: multi-stage builds to keep images small, layer caching strategies so rebuilds don't take forever, and real examples across Node, Python, and Go. The progressive disclosure is well structured, starting with a quick three-step setup and expanding into production patterns and debugging. Honestly, the framework examples section could be deeper, but the core concepts and compose configurations are solid enough to get a full stack app running locally or help you troubleshoot why your build is slow.