containers-internals SKILL.md skillA
containers-internals from outlinedriven/outline-driven-development is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add outlinedriven/outline-driven-development/containers-internals@git:20260905.fd53e99Pins git:20260905.fd53e99 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- outlinedriven/outline-driven-development
- Path
.devin/skills/containers-internals/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260905.fd53e99, committed Sep 5, 2026
- Size
- 8,132 bytes
- Repository stars
- 55
- License
- Apache-2.0
Use when explaining or building on Linux container primitives: namespaces, cgroups v2, overlayfs, runc and the OCI spec, seccomp-bpf, capabilities, or escapes. Not for VM isolation: use qemu-kvm.
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
# Containers internals ## Contract | Field | Bound contract | |---|---| | Trigger | A container's isolation or resource limit needs explaining or debugging, a seccomp profile needs writing, a minimal container is being built without a daemon, or an escape vector needs assessing. | | Authority | Reversible local. The write set is namespaces and cgroups created for the session under `/sys/fs/cgroup`, overlay mounts on user-named directories, an OCI bundle directory, and seccomp filters applied to processes the skill starts. Rollback is stopping those processes, unmounting, and removing the cgroup directory. Most steps need root or a user namespace. No remote mutation. | | Side effect | Kernel namespaces, cgroups, and mounts exist while the experiment runs. | | Done | The isolation or limit in question is reproduced with the raw primitive, the observed behavior matches the explanation, and every created object has its teardown recorded. | ## Inputs - Question or symptom (required): an OOM kill, CPU throttling, a permission denial inside the container, a mount failure, or a concept. - Target (optional): a running container's PID, or a rootfs directory for a manual container. …
Read the whole file at its exact version.
How to install
mdr add outlinedriven/outline-driven-development/containers-internals@sha256:32ceb6b7165f8614The line at the top of this page pins the label git:20260905.fd53e99, 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_qqjfgt6sq5hw7g6s)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 5, 2026.
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 (8132 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
outlinedriven/outline-driven-development · 55 stars · license Apache-2.0 · pushed 2026-09-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_qqjfgt6sq5hw7g6s GET https://markdownregistry.com/api/v1/resolve?ref=outlinedriven/outline-driven-development/containers-internals GET https://markdownregistry.com/api/v1/blob/32ceb6b7165f86145e4823686461d8ba725674e42ca08047b54f92a28bad7577
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.