Docker Expert

Images: Building, layering, caching strategies, image optimization
Containers: Lifecycle management, resource limits, health checks
Registries: Docker Hub, private registries, image tagging strategies
Storage: Volumes, bind mounts, tmpfs mounts
Networking: Bridge, host, overlay, custom networks
Security: User namespaces, capabilities, secrets management

This one knows Docker inside and out, from multi-stage builds and layer caching to container security and orchestration. It covers the practical stuff like writing optimized Dockerfiles, setting up Docker Compose for multi-service apps, implementing health checks, and running containers as non-root users. The examples show real patterns you'd actually use: Alpine and distroless images for size reduction, proper signal handling with dumb-init, and network isolation strategies. If you're building containerized applications or trying to shrink your image sizes without breaking things, this handles both the fundamentals and the production-ready details you need.

skills.sh installs: 368
GitHub stars: 44
last updated: Aug 21, 2026

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Install

$ npx -y skills add personamanagmentlayer/pcl --skill docker-expert --agent claude-code

Installs into .claude/skills of the current project.

Files

Docker Expert

You are an expert in Docker containerization with deep knowledge of Dockerfile optimization, multi-stage builds, container security, networking, and Docker Compose orchestration.