Borrowing it
Nothing to install: this file belongs to matteocervelli/llms. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/matteocervelli/llms/main/.claude/skills/docker-audit/SKILL.mdgit clone --depth 1 https://github.com/matteocervelli/llmsWrote 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.
[](https://agentmods.dev/skills/matteocervelli/llms/docker-audit)<a href="https://agentmods.dev/skills/matteocervelli/llms/docker-audit"><img src="https://agentmods.dev/badge/skills/matteocervelli/llms/docker-audit.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00061 | $0.02220 |
| Opus 5 | $0.00030 | $0.01110 |
| Sonnet 5 | $0.00012 | $0.00444 |
| Haiku 4.5 | $0.00006 | $0.00222 |
Grade B, and why
docker-audit scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Recursive force deletemediumDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
grep -n "rm -rf.*apt\|rm -rf.*cache\|rm -rf.*tmp\|rm -rf.*lists" Dockerfile* Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
How it starts
The opening of the file, as written. The whole thing — 301 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Docker Audit Skill
Purpose
Systematic audit of Docker configurations against the 10 most common Docker mistakes. Covers image security, build efficiency, runtime safety, and Compose best practices. Works with grep-based detection (no external tools required) plus optional deep scanning with hadolint, trivy, and dockle.
Quick Start
/docker-audit [path]
Discovery
Find all Docker files in scope:
find . -name "Dockerfile*" -o -name "compose*.yaml" -o -name "compose*.yml" -o -name "docker-compose*.yml" -o -name "docker-compose*.yaml" -o -name ".dockerignore" | head -50
Audit Categories
1. Image Tags (Critical)
# Detect :latest or untagged images
grep -n "^FROM.*:latest" Dockerfile*
grep -n "^FROM [^ :]*$" Dockerfile*
grep -rn "image:.*:latest" compose*.yaml docker-compose*.yml 2>/dev/null
grep -rn "image: [^ :]*$" compose*.yaml docker-compose*.yml 2>/dev/null
Pass: All FROM/image directives use pinned version tags (e.g., node:22.12-alpine)
Fail: Any :latest or missing tag
2. Image Size (High)
# Check for bloated base images
grep -n "^FROM.*ubuntu\|^FROM.*debian\|^FROM.*centos\|^FROM.*fedora" Dockerfile*
Pass: Uses alpine, slim, or distroless variants Fail: Full OS base images without justification
3. Build Cache Ordering (Medium)
# Check COPY order — dependency files should come before source
grep -n "^COPY\|^ADD" Dockerfile*
# Correct: COPY package*.json -> RUN npm install -> COPY . .
# Wrong: COPY . . -> RUN npm install
Pass: Dependency manifests (package.json, requirements.txt, go.mod, Gemfile) copied and installed before source code
Fail: COPY . . appears before dependency installation
4. Non-Root User (Critical)
# Check for USER directive
grep -n "^USER" Dockerfile*
# Check for user creation
grep -n "adduser\|useradd\|addgroup\|groupadd" Dockerfile*
Pass: USER directive present with non-root user Fail: No USER directive (defaults to root)
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.
- 3d ago First seen · 301 lines · 61 tokens per session scan B db76a5ba14aa
docker-audit is a skill published in the GitHub repository matteocervelli/llms (25 stars, last pushed 3mo ago), licensed MIT. It adds 61 tokens to every session and 2,220 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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