unboundcompute/security-agent-skills · skills/auditing-container-image-build-hardening/SKILL.md

auditing-container-image-build-hardening skillA

auditing-container-image-build-hardening is agent-read markdown (skill) from unboundcompute/security-agent-skills: Audit container image build definitions (Dockerfile, containerfile, and the compose or run config that sets runtime flags) for an image that ships over-privileged or carrying a secret, after multi-stage discards and deploy-time overrides are accounted for. Covers an image that runs as root, a secret baked into a layer, remote content pulled unpinned or unverified, a mutable or untagged base, an over-broad copy that pulls in local secrets and history, and a dangerous runtime request such as privi.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add unboundcompute/security-agent-skills/auditing-container-image-build-hardening@git:20260823.e797ed0
Exact content
mdr add unboundcompute/security-agent-skills/auditing-container-image-build-hardening@sha256:558a9ebed7d36628

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_l6deoabjiry4ibn7.svg)](https://markdownregistry.com/a/art_l6deoabjiry4ibn7)

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Versions

versioncommittedcommitsizeaudit
git:20260823.e797ed0 latest2026-08-23 e797ed0 9,048 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (9048 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

unboundcompute/security-agent-skills · 5 stars · license MIT · pushed 2026-09-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_l6deoabjiry4ibn7
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/auditing-container-image-build-hardening
GET https://markdownregistry.com/api/v1/blob/558a9ebed7d3662854b8d4bbc03bb180294280d37e453116e65ed36abbdeb232

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.