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Docker Expert

Guides an agent to build, debug, and optimize Docker containers, Dockerfiles, and Compose stacks.

Source Download skill
Repository
RightNow-AI/openfang
Stars
18,243
Licence
Apache-2.0
Files
1 file

What it does

When installed, this skill tells the agent to act as a Docker specialist. It gives the agent a set of best practices and debugging steps to follow when you ask about containers, Dockerfiles or Docker Compose, such as pinning image tags, using multi-stage builds, avoiding root users, and where to look when a container fails to start. It is guidance only: the file contains instructions and no scripts or tools of its own.

Great for

  • Developers who are writing or fixing a Dockerfile or Compose file
  • Engineers troubleshooting containers that crash, fail health checks, or cannot reach each other
  • Teams wanting a consistent checklist for smaller, more reproducible images

Skip it if

  • Production-critical changes made without review, since the advice is general and the agent may not know your environment (the agent should still be checked against your own setup)
  • Users with no Docker knowledge who need a full introduction; the skill assumes some familiarity with containers

Try asking

  • “Review my Dockerfile and make the image smaller and more secure”
  • “My Compose stack's API container keeps starting before the database is ready, how do I fix it?”
  • “Why does my container exit immediately? Walk me through debugging it”
  • “Help me set up a multi-stage build for my Node app”
Step-by-step guide: how to use Docker ExpertInstall, first run, examples, tips and FAQs

Install in 3 steps

  1. 1

    Download the skill

    The ZIP contains the 1 original files, the Apache-2.0 licence and an attribution note.

    docker.zip
  2. 2

    Add it to your agent

    Claude Code (all projects)

    mkdir -p ~/.claude/skills && unzip docker.zip -d ~/.claude/skills/

    Claude Code / Agent SDK (this project only)

    mkdir -p .claude/skills && unzip docker.zip -d .claude/skills/

    Claude apps (web/desktop): Settings → Capabilities → Skills → Upload skill, and choose the ZIP.

  3. 3

    Ask for the task

    No special command needed — the agent reads the skill's description and loads it when your request matches. Try one of the prompts above.

Get better results

  • Give the agent your Dockerfile or docker-compose.yml and the exact error output so it can debug from real evidence
  • Tell the agent your target environment (production, local dev) because some advice, like HEALTHCHECK and user settings, depends on it
  • Review any commands the agent suggests before running them, especially ones that remove containers, images or volumes

What's inside

  • SKILL.md

Redistributed unmodified from RightNow-AI/openfang under the Apache-2.0 licence. The assessment was drafted with AI from the skill's files on 2026-10-29. Skills can instruct your agent to run code — read SKILL.md and any scripts before installing.