docker

docker is a skill for Claude Code, Codex from OpenHands/extensions. It costs 32 tokens per session (191 once invoked), scanned B, original, MIT.

A guide for running and managing Docker containers and images. Docker packages software and its dependencies into isolated, repeatable environments called containers.

In plain words
What is it for?
Use it to start the Docker service, run a test container, and build, run, or manage containers and images.
Why use it?
It provides the commands and checks needed to start Docker in a container environment and confirm that it works.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to start the Docker service, run a test container, and build, run, or manage containers and images.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/openhands/extensions/docker
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add OpenHands/extensions --skill docker
Clone the repo
git clone --depth 1 https://github.com/OpenHands/extensions

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for docker

README.md
[![agentmods](https://agentmods.dev/badge/skills/openhands/extensions/docker/github.svg)](https://agentmods.dev/skills/openhands/extensions/docker)
Your own site
<a href="https://agentmods.dev/skills/openhands/extensions/docker"><img src="https://agentmods.dev/badge/skills/openhands/extensions/docker/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for docker

Your own site · 80×15
<a href="https://agentmods.dev/skills/openhands/extensions/docker"><img src="https://agentmods.dev/badge/skills/openhands/extensions/docker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 191 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 5 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Privilege Escalation · line 17
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Privilege Escalation · line 23
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Privilege Escalation · line 30
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium MCP Rug Pull · line 30
    Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.
    Fix: Pin the image: image:tag or image@sha256:abc123
  • medium MCP Rug Pull · line 33
    Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.
    Fix: Pin the image: image:tag or image@sha256:abc123
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00032 $0.00191
Opus 5.5 $0.00013 $0.00076
Sonnet 5.5 $0.00006 $0.00038
Haiku 4.5 $0.00003 $0.00019

Measured 1mo ago against content hash d4c69e419829, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

docker scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo dockerd > /tmp/docker.log 2>&1 &
skills/docker/SKILL.md · 34 lines

What it actually says

Docker Usage Guide

Starting Docker in Container Environments

Please check if docker is already installed. If so, to start Docker in a container environment:

# Start Docker daemon in the background
sudo dockerd > /tmp/docker.log 2>&1 &

# Wait for Docker to initialize
sleep 5

On Windows, start Docker Desktop or the Docker service instead of running sudo dockerd; then run Docker commands from PowerShell without sudo.

Verifying Docker Installation

To verify Docker is working correctly, run the hello-world container:

sudo docker run hello-world

PowerShell equivalent after Docker Desktop is running: docker run hello-world.

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 34 lines · 32 tokens per session scan B d4c69e419829

Subscribe to this mod's changes

docker is a skill published in the GitHub repository OpenHands/extensions (167 stars, last pushed today), licensed MIT. It adds 32 tokens to every session and 191 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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