add-container SKILL.md skillA

add-container from ajnart/self-host is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add ajnart/self-host/add-container@git:20261030.54eb2af

Pins git:20261030.54eb2af in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
ajnart/self-host
Path
.claude/skills/add-container/SKILL.md
Versions recorded
1
Latest version
git:20261030.54eb2af, committed Oct 30, 2026
Size
2,788 bytes
Repository stars
1,536
License
Apache-2.0

DCM Container work. Use to add or edit a Container in dcm/src/tools/, including an issue labelled `container` and then `accepted`, and the pull request dcm-add-container.yml opens from it. A Container is a compose snippet DCM offers for a product the Catalog does not install. Catalog Apps go to edit-catalog.

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

# Add or edit a Container

Read `docs/agents/dcm.md` for how DCM merges Containers with Apps, and `docs/agents/generated-data.md` for the collision gap this skill closes by hand. Use `CONTEXT.md`'s words: DCM, Container, App.

## 1. Check for collisions

DCM merges a Container with the App of the same id or alias, and the App's compose wins; it drops a Container named `<app>-...` whose services the App provides. No test reports either. Search for the product under every spelling (`<name>` below):

```bash
jq -r '.apps[].id' dcm/src/data/selfhost.json | grep -i <name>
grep -n -i <name> dcm/src/lib/selfhost.ts
grep -rn 'id: "<id>"' dcm/src/tools
```

**Done:** the first two print nothing, no App id followed by `-` is a prefix of `<id>`, and the third prints nothing. When the first two hit, the Catalog already has the product: change its compose through `edit-catalog`, and here only edit the existing Container's name, tags or icon.

## 2. Cite the image and ports

Fetch the project's own docs or registry page (`curl` or your fetch tool) and take the image, tag, container port and data path from it. Values in the request are claims to confirm against that page.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add ajnart/self-host/add-container@sha256:2a39073d79759b16

The line at the top of this page pins the label git:20261030.54eb2af, 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.

Badge

mdr badge

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

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Oct 30, 2026.

versioncommittedcommitsizeaudit
git:20261030.54eb2af latest2026-10-30 54eb2af 2,788 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (2788 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

ajnart/self-host · 1,536 stars · license Apache-2.0 · pushed 2026-11-04 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_yoinmuldcsjmoikc
GET https://markdownregistry.com/api/v1/resolve?ref=ajnart/self-host/add-container
GET https://markdownregistry.com/api/v1/blob/2a39073d79759b1675c3dfb957b64997b552263084f5afe09ac043394709551d

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.

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