dockerfile-scan

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Mis à jour23 juin 2026 à 07:55

Scan a Dockerfile for insecure build patterns — running as root, unpinned or :latest base images, ADD from remote URLs, piping curl/wget into a shell, hardcoded secrets in ENV/ARG, world-writable chmod 777, and sudo usage. Use when the user asks to "review my Dockerfile", "is this container image secure", "lint my Dockerfile for security", or "why does my image run as root".

Installation

Installer avec Codex ou Claude Copiez ce prompt, collez-le dans Codex, Claude ou un autre assistant, puis laissez-le vérifier la page du skill et l'installer pour vous.

Source

NovaCode37

NovaCode37/claude-security-skills

Ouvrir le dépôt GitHub Voir les dépôts du créateur

Téléchargement

Métiers associésSOC

Basé sur la classification professionnelle SOC

Analystes en sécurité de l'informationProfessions informatiques et mathématiques·SOC 15-1212

Explorateur de fichiers

3 fichiers

SKILL.md

readonly

name	dockerfile-scan
description	Scan a Dockerfile for insecure build patterns — running as root, unpinned or :latest base images, ADD from remote URLs, piping curl/wget into a shell, hardcoded secrets in ENV/ARG, world-writable chmod 777, and sudo usage. Use when the user asks to "review my Dockerfile", "is this container image secure", "lint my Dockerfile for security", or "why does my image run as root".
license	MIT

Dockerfile Security Scan

Parses a Dockerfile and flags common security and supply-chain problems, each with a concrete fix. Pure text analysis — no Docker daemon, no network, stdlib only.

When to use this skill

"Review this Dockerfile for security issues."
"Is my container running as root?"
"Lint my Dockerfiles before I push them."

What it checks

Base image pinning — missing tag or :latest (docker-no-tag, docker-latest-tag).
Runs as root — no USER, or final USER is root (docker-root-user).
Remote code execution — curl|wget … | sh (docker-remote-exec).
Remote ADD — ADD http://… without integrity checks (docker-add-remote).
Hardcoded secrets — ENV/ARG with a secret-looking name and a value (docker-hardcoded-secret).
Loose permissions — chmod 777 (docker-chmod-777).
sudo usage in RUN (docker-sudo).

How to run it

# Scan one Dockerfile
python skills/dockerfile-scan/scanner.py path/to/Dockerfile

# Scan every Dockerfile under a directory, as JSON
python skills/dockerfile-scan/scanner.py . --json

Exit codes: 0 clean · 1 findings present · 2 usage/IO error.

Recommended workflow for Claude

Run the scan on the file or repo.
Present findings by severity, each with its one-line fix.
Offer a corrected Dockerfile snippet (pinned base image, non-root USER, COPY instead of remote ADD, secrets moved to runtime).

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name	dockerfile-scan
description	Scan a Dockerfile for insecure build patterns — running as root, unpinned or :latest base images, ADD from remote URLs, piping curl/wget into a shell, hardcoded secrets in ENV/ARG, world-writable chmod 777, and sudo usage. Use when the user asks to "review my Dockerfile", "is this container image secure", "lint my Dockerfile for security", or "why does my image run as root".
license	MIT

Dockerfile Security Scan

Parses a Dockerfile and flags common security and supply-chain problems, each with a concrete fix. Pure text analysis — no Docker daemon, no network, stdlib only.

When to use this skill

"Review this Dockerfile for security issues."
"Is my container running as root?"
"Lint my Dockerfiles before I push them."

What it checks

Base image pinning — missing tag or :latest (docker-no-tag, docker-latest-tag).
Runs as root — no USER, or final USER is root (docker-root-user).
Remote code execution — curl|wget … | sh (docker-remote-exec).
Remote ADD — ADD http://… without integrity checks (docker-add-remote).
Hardcoded secrets — ENV/ARG with a secret-looking name and a value (docker-hardcoded-secret).
Loose permissions — chmod 777 (docker-chmod-777).
sudo usage in RUN (docker-sudo).

How to run it

# Scan one Dockerfile
python skills/dockerfile-scan/scanner.py path/to/Dockerfile

# Scan every Dockerfile under a directory, as JSON
python skills/dockerfile-scan/scanner.py . --json

Exit codes: 0 clean · 1 findings present · 2 usage/IO error.

Recommended workflow for Claude

Run the scan on the file or repo.
Present findings by severity, each with its one-line fix.
Offer a corrected Dockerfile snippet (pinned base image, non-root USER, COPY instead of remote ADD, secrets moved to runtime).