docker-image-audit

docker-image-audit is a skill for Claude Code from bdfinst/agentic-dev-team. It costs 159 tokens per session (2,231 once invoked), scanned A, original, MIT.

A security audit for Dockerfiles and Docker images, which package applications and their runtime environment for consistent deployment. It checks for known vulnerabilities, image bloat, and Dockerfile mistakes.

In plain words
What is it for?
Use it to review Dockerfiles and scan built images for known software vulnerabilities and best-practice violations.
Why use it?
It brings security and maintenance problems in container builds into one severity-ranked report.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the dev-team plugin — 98 skills, 54 agents, 4 hooks shipped together

Good fit Use it to review Dockerfiles and scan built images for known software vulnerabilities and best-practice violations.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add bdfinst/agentic-dev-team
Claude Code
/plugin install dev-team

Made for: Claude Code.

Or install dev-team, the plugin that ships this one along with the rest of its 98 skills, 54 agents, 4 hooks.

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-image-audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/bdfinst/agentic-dev-team/docker-image-audit/github.svg)](https://agentmods.dev/skills/bdfinst/agentic-dev-team/docker-image-audit)
Your own site
<a href="https://agentmods.dev/skills/bdfinst/agentic-dev-team/docker-image-audit"><img src="https://agentmods.dev/badge/skills/bdfinst/agentic-dev-team/docker-image-audit/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-image-audit

Your own site · 80×15
<a href="https://agentmods.dev/skills/bdfinst/agentic-dev-team/docker-image-audit"><img src="https://agentmods.dev/badge/skills/bdfinst/agentic-dev-team/docker-image-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 159 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,231 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00159 $0.02231
Opus 5.5 $0.00064 $0.00892
Sonnet 5.5 $0.00032 $0.00446
Haiku 4.5 $0.00016 $0.00223

Measured 1mo ago against content hash 1a59ea7b893b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

docker-image-audit scanned grade A 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

| **"God Dockerfile"** | CI/CD baked into the build: SonarQube, Black Duck, Snyk, Helm packaging, `curl` uploads to Nexus/Artifactory, `npm publish`, `git clone`. The Dockerfile should produce a runnable image — everythi
plugins/dev-team/skills/docker-image-audit/SKILL.md · 109 lines

How it starts

The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Docker Image Audit

Audit Dockerfiles and container images using three complementary tools — hadolint (static Dockerfile linting), Trivy (CVE scanning), and Grype (second-opinion CVE scanning) — plus manual structural analysis for architectural issues the tools miss. Synthesize all findings into a single severity-ranked report with concrete fixes.

Prerequisites

command -v hadolint && command -v trivy && command -v grype
Tool Quick install (macOS) Purpose
hadolint brew install hadolint Static Dockerfile analysis
trivy brew install trivy Vulnerability scanning
grype brew install grype Second-opinion CVE scanning

If any tool is missing, run /project-init to set up this repo's tooling — it installs hadolint/trivy/grype as capability tools when a Dockerfile is present (see its ${CLAUDE_PLUGIN_ROOT}/skills/project-init/references/capability-tools.md) — or install these Docker tools directly per references/install-guide.md (multi-platform; the install-guide is the fallback). The skill degrades gracefully — hadolint alone covers static analysis; Trivy + Grype require a built image. If no tools are installed, still run the structural analysis (Step 2b). A tool-free audit is better than no audit.

Workflow

Step 1: Identify the Target

  • Dockerfile only — hadolint + structural analysis (no built image needed)
  • Built image — Trivy + Grype (image must exist locally or in a registry)
  • Both — all steps (default when both are available)

If the user points to a Dockerfile but no built image exists, offer to build it or proceed with Dockerfile-only analysis.

Step 2: Hadolint

hadolint --format json Dockerfile

Catches base image issues (:latest tag, unpinned versions), security anti-patterns (ADD vs COPY, running as root), efficiency problems (missing --no-cache, uncleaned apt cache), and shell issues in RUN instructions via integrated ShellCheck. Note: hadolint flags :latest (DL3007) but not other unpinned tags like :10.0 without a digest — call those out in Step 2b (Structural Analysis) if the base image lacks a specific patch version or SHA digest.

Read the full file on GitHub · 109 lines

Files

What ships with it

2 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 · 109 lines · 159 tokens per session scan A 1a59ea7b893b

Subscribe to this mod's changes

docker-image-audit is a skill published in the GitHub repository bdfinst/agentic-dev-team (295 stars, last pushed 4d ago), licensed MIT. It adds 159 tokens to every session and 2,231 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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