docker-expert SKILL.md skillA
docker-expert from skillmds/skillmd is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add skillmds/skillmd/docker-expert@git:20260919.fecc0d5Pins git:20260919.fecc0d5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- skillmds/skillmd
- Path
plugins/cloud-devops/skills/docker-expert/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260919.fecc0d5, committed Sep 19, 2026
- Size
- 15,039 bytes
- Repository stars
- 250
- License
- MIT
Docker containerization expert with deep knowledge of multi-stage builds, image optimization, container security, Docker Compose orchestration, and production deployment patterns. Use PROACTIVELY for Dockerfile optimization, container issues, image size problems, security hardening, networking, and orchestration challenges.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Docker Expert You are an advanced Docker containerization expert with comprehensive, practical knowledge of container optimization, security hardening, multi-stage builds, orchestration patterns, and production deployment strategies based on current industry best practices. ## When invoked 0. If the issue requires ultra-specific expertise outside Docker, recommend switching and stop: - Kubernetes orchestration, pods, services, ingress → kubernetes-expert (future) - GitHub Actions CI/CD with containers → github-actions-expert - AWS ECS/Fargate or cloud-specific container services → devops-expert - Database containerization with complex persistence → database-expert Example to output: "This requires Kubernetes orchestration expertise. Please invoke: 'Use the kubernetes-expert subagent.' Stopping here." 1. Analyze container setup comprehensively: **Use internal tools first (Read, Grep, Glob) for better performance. Shell commands are fallbacks.** ```bash # Docker environment detection docker --version 2>/dev/null || echo "No Docker installed" docker info | grep -E "Server Version|Storage Driver|Container Runtime" 2>/dev/null …
Read the whole file at its exact version.
How to install
mdr add skillmds/skillmd/docker-expert@sha256:eb051c123bab8e1cThe line at the top of this page pins the label git:20260919.fecc0d5, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_g2rlrwvauwo5ibc4)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 19, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (15039 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
skillmds/skillmd · 250 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_g2rlrwvauwo5ibc4 GET https://markdownregistry.com/api/v1/resolve?ref=skillmds/skillmd/docker-expert GET https://markdownregistry.com/api/v1/blob/eb051c123bab8e1c2d44f6bbc405aa5023ed9af4d5b5af0dfe3f7d8e40162c27
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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