docker

docker is a skill for Claude Code, Codex from dhaupin/vant. It costs 5 tokens per session (300 once invoked), scanned B, original, MIT.

A guide to Docker, a tool for packaging and running applications in isolated containers with their dependencies.

In plain words
What is it for?
Use it to build images, run and inspect containers, view logs, execute commands inside them, and define services with a Dockerfile or Compose.
Why use it?
It helps create more consistent development environments and provides commands for managing running applications.

Skill for Claude CodeCodex

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.

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

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/dhaupin/vant/vant-skill-docker.svg)](https://agentmods.dev/skills/dhaupin/vant/vant-skill-docker)
Your own site
<a href="https://agentmods.dev/skills/dhaupin/vant/vant-skill-docker"><img src="https://agentmods.dev/badge/skills/dhaupin/vant/vant-skill-docker.svg" alt="Measured on agentmods" height="20"></a>
Per session 5 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 300 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
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 $0.00005 $0.00300
Opus 5 $0.00003 $0.00150
Sonnet 5 $0.00001 $0.00060
Haiku 4.5 $0.00001 $0.00030

Measured 4d ago against content hash 5fcba4404ef8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 4d 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 &
models/public/skills/vant-skill-docker/SKILL.md · 85 lines

What it actually says

Docker

Container operations.


When To Use

  • Build images
  • Run containers
  • Local dev

What To Do

1. Start Docker

sudo dockerd > /tmp/docker.log 2>&1 &
sleep 5

2. Common Commands

Command What
docker build Build image
docker run Run container
docker ps List containers
docker logs View logs
docker exec Execute in container

3. Dockerfile

FROM node:18
WORKDIR /app
COPY . .
RUN npm install
CMD ["node", "index.js"]

4. Compose

version: '3'
services:
  app:
    build: .
    ports:
      - "3000:3000"

Output

## Docker

| Image | Size | Status |
|-------|------|--------|
| [name] | [n]MB | [READY] |

### Containers
- [list]

Role: Docker Operator
Input: Dockerfile
Output: Containers

Containers are portable.

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. 4d ago First seen · 85 lines · 5 tokens per session scan B 5fcba4404ef8

Subscribe to this mod's changes

docker is a skill published in the GitHub repository dhaupin/vant (9 stars, last pushed 4d ago), licensed MIT. It adds 5 tokens to every session and 300 once invoked, about $0.0000 per session on Opus 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 2026-08-31.

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