How does this skill improve Dockerfile security?

It automatically analyzes Dockerfile instructions against security best practices, catching risks like root user usage, insecure ADD commands, and unpinned package versions before the image is built.

What standards does it validate against?

The skill primarily validates against the CIS Docker Benchmark and OWASP container security recommendations, ensuring high-level industry compliance.

Can I customize the security rules?

Yes, the skill supports custom configuration via .hadolint.yaml files, allowing you to ignore specific rules, set custom severity thresholds, or define trusted registries.

Does it detect hardcoded secrets?

Yes, Hadolint includes rules to identify hardcoded secrets, passwords, and sensitive credentials within ENV, ARG, and LABEL instructions.

Does this skill support multi-stage Dockerfiles?

Yes, it validates all stages of a Dockerfile to ensure that security hardening is maintained from the initial build stage through to the final production runtime image.

Dockerfile Security & Best Practices

Name: Dockerfile Security & Best Practices
Author: AgentSecOps

byAgentSecOps

•

Security & Testing

Automates Dockerfile security auditing and best practice validation using Hadolint and CIS Docker Benchmarks.

This skill empowers Claude to perform deep security analysis on Dockerfiles by integrating Hadolint, a leading linter for container images. It identifies misconfigurations, anti-patterns, and security vulnerabilities—such as root-user execution, unpinned package versions, and insecure command usage—while mapping findings to industry standards like the CIS Docker Benchmark and OWASP. It is essential for developers implementing shift-left security to ensure production-grade container hardening and compliance throughout the development lifecycle.

Key Features

01Hardcoded secret and credential detection in ENV, ARG, and LABEL instructions

02Security-focused linting with 100+ rules aligned to CIS Docker Benchmarks

0317 GitHub stars

04Remediation guidance for fixing insecure Dockerfile instructions

05ShellCheck integration for validating RUN instruction shell commands

06Multi-stage build validation to prevent build-time leakages

Use Cases

01Enforcing organizational container standards within CI/CD pipelines

02Auditing Dockerfiles for security vulnerabilities during local development

03Remediating legacy Dockerfiles to meet modern security compliance

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add agentsecops/secopsagentkit devsecops

For use in Claude.ai and ChatGPT

Download Skill