docker-in-machine SKILL.md skillA
docker-in-machine from smol-machines/smolvm is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add smol-machines/smolvm/docker-in-machine@git:20261016.432b170Pins git:20261016.432b170 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- smol-machines/smolvm
- Path
docs/docker-in-machine/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261016.432b170, committed Oct 16, 2026
- First version recorded
- Oct 6, 2026
- Size
- 13,655 bytes
- Repository stars
- 6,776
- License
- Apache-2.0
Runs a Docker daemon inside a smolvm machine and shows it working there, which is what tools that call Docker themselves need, such as a test suite that starts containers, an image build, or a coding agent that launches containers. Use when dockerd will not start inside a machine; when Docker worked on the first boot and broke after a stop and start; when deciding where Docker's data directory has to live; or when checking whether this is possible on a given platform at all. Do not use it to…
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
# A Docker daemon inside a machine Verified on **smolvm v1.29.0** on macOS arm64, 2026-10-15, and on **v1.18.2** on Linux aarch64, 2026-09-24; the Linux runs used the Smolfile with `memory = 1024`, for a host reason given below. Done means `docker info` succeeds inside the guest, a nested container runs, and Docker's data sits on the ext4 storage disk rather than the rootfs overlay. The Linux runs used the scripts of their date; this version's preflight and cleanup scripts ran on Linux aarch64 on v1.22.2 on 2026-10-03. **On Windows, up to and including v1.22.2, `dockerd` does not start in a machine.** The Windows guest kernel is built without bridge networking and POSIX message queues, so `dockerd` cannot create its default network and, forced past that, containers still cannot be created. `references/windows.md` has the evidence and the direct kernel probe, which gave the same answer on v1.22.2. ## Docker's data has to be on the machine's disk on every start From v1.28.1 a disk volume, a guest path with no host side, is a directory on the machine's ext4 disk, bound into the workload on every start ([#1787](https://github.com/smol-machines/smolvm/pull/1787)). …
Read the whole file at its exact version.
How to install
mdr add smol-machines/smolvm/docker-in-machine@sha256:663740b04b225f76The line at the top of this page pins the label git:20261016.432b170, 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_znghj5iguhek4vwt)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Oct 6, 2026 and Oct 16, 2026, about one every 5 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261016.432b170 latest | 2026-10-16 | 432b170 | 13,655 B | A | view · diff |
| git:20261014.8cf0601 | 2026-10-14 | 8cf0601 | 10,829 B | A | view · diff |
| git:20261006.3ef2727 | 2026-10-06 | 3ef2727 | 10,795 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 (13655 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
smol-machines/smolvm · 6,776 stars · license Apache-2.0 · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_znghj5iguhek4vwt GET https://markdownregistry.com/api/v1/resolve?ref=smol-machines/smolvm/docker-in-machine GET https://markdownregistry.com/api/v1/blob/663740b04b225f76cebaff89a17f3bff66f9936cb993e1e2813376cfe56c4e6e
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.