docker-security SKILL.md skillA
docker-security from gtapps/hermitd is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add gtapps/hermitd/docker-security@git:20261017.dcc144ePins git:20261017.dcc144e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- gtapps/hermitd
- Path
plugins/hermitd/skills/docker-security/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261017.dcc144e, committed Oct 17, 2026
- First version recorded
- Oct 2, 2026
- Size
- 23,738 bytes
- Repository stars
- 82
- License
- MIT
Opt-in advanced Docker security hardening beyond the docker-setup baseline — LAN containment with DNS policy, resource bounds with kernel-hygiene sysctls, and a boot-time plugin install audit log. Applied as a reversible docker-compose overlay (does not touch the base compose file) and verified against the live container. Run after /docker-setup; requires bridge networking.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Docker Security
Advanced hardening for already-deployed hermit containers. Each toggle is opt-in, presented with honest cost/benefit framing, and applied as a `docker-compose.security.yml` overlay that the `hermitd-docker` wrapper auto-detects. Reversal: re-run and answer No to every prompt, or delete `docker-compose.security.yml` directly.
**Tone:** Honest about tradeoffs. Tell operators what each toggle does AND does not protect. Do not oversell.
Each step's commands depend on the previous step's answer, so run them in order.
Templates live in `${CLAUDE_SKILL_DIR}/../../state-templates/docker/security/`.
## Trust model framing (read to operator at the start of step 2)
> Installing a plugin runs that plugin's hooks and skills with the same authority as hermit. The container hardening here reduces what a *compromised* plugin can do to the host kernel and your local network — it does not vet the plugin's intent, sandbox its file access within the project, or prevent it from acting on your behalf via the agent. A malicious or careless plugin still runs as you.
>
…Read the whole file at its exact version.
How to install
mdr add gtapps/hermitd/docker-security@sha256:82598a467248906cThe line at the top of this page pins the label git:20261017.dcc144e, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_46mow4a3aqkfct3a)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Oct 2, 2026 and Oct 17, 2026, about one every 14 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261017.dcc144e latest | 2026-10-17 | dcc144e | 23,738 B | A | view · diff |
| git:20261002.2f2da1b | 2026-10-02 | 2f2da1b | 23,751 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (23738 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
gtapps/hermitd · 82 stars · license MIT · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_46mow4a3aqkfct3a GET https://markdownregistry.com/api/v1/resolve?ref=gtapps/hermitd/docker-security GET https://markdownregistry.com/api/v1/blob/82598a467248906cedbddad2a563229756fc5f068d617748834903fd8aa421d3
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.