docker-sandbox SKILL.md skillB
docker-sandbox from ariana-dot-dev/cloud-sandbox-vm-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ariana-dot-dev/cloud-sandbox-vm-skills/docker-sandbox@git:20261109.2f1d005Pins git:20261109.2f1d005 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ariana-dot-dev/cloud-sandbox-vm-skills
- Path
skills/docker-sandbox/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261109.2f1d005, committed Nov 9, 2026
- First version recorded
- Jun 13, 2026
- Size
- 1,619 bytes
- Repository stars
- 3
- License
- MIT
Run Docker and containers in a cloud sandbox — a full root Ubuntu VM with Docker preinstalled and its own kernel, so `docker build`/`docker run`/compose work with no extra setup. Default 4 vCPU / 8 GB / 51 GB disk, $0.036/h billed per second. Use to build images, run compose stacks, or test containers off-host.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Docker sandbox (Box) Use this when a task needs **Docker**: building an image, running `docker compose`, or testing a container. On some sandboxes Docker needs extra setup or a different runtime; Box is a full VM with Docker (BuildKit, Compose) preinstalled on its own kernel. ## Why Box - **Docker preinstalled, real machine** — `docker build`, `docker run`, compose stacks. - **51 GB disk on the default size** — room for images and layers; larger sizes have 111 GB or 251 GB. - **Cheap & isolated** — per-second billing, separate from the host. ## Prereqs `curl -fsSL https://box.ascii.dev/install | sh`, then `box login "$BOX_API_KEY" --json`. ## Recipe ```bash box_id="$(box new --json | jq -r 'select(.event == "ready") | .id')" box ssh "$box_id" -- bash -s < ./clone-and-build.sh # git clone + docker build box ssh "$box_id" -- "cd /project && docker compose up -d" box ssh "$box_id" -- "host 8080" # expose the running container box delete "$box_id" --json ``` ## Limits …
Read the whole file at its exact version.
How to install
mdr add ariana-dot-dev/cloud-sandbox-vm-skills/docker-sandbox@sha256:b3b944c5e053923bThe line at the top of this page pins the label git:20261109.2f1d005, 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_ckbe6qzfk5vqczsh)
0 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jun 13, 2026 and Nov 9, 2026, about one every 149 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261109.2f1d005 latest | 2026-11-09 | 2f1d005 | 1,619 B | B | view · diff |
| git:20260613.95ab83b | 2026-06-13 | 95ab83b | 1,463 B | B | view |
Audit of the latest version
- fail: No curl or wget piped into a shell (matched: curl -fsSL https://box.ascii.dev/install | sh)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1619 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 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
ariana-dot-dev/cloud-sandbox-vm-skills · 3 stars · license MIT · pushed 2026-11-09 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_ckbe6qzfk5vqczsh GET https://markdownregistry.com/api/v1/resolve?ref=ariana-dot-dev/cloud-sandbox-vm-skills/docker-sandbox GET https://markdownregistry.com/api/v1/blob/b3b944c5e053923b3653dea771d9de7ed69a64a1658740de2260468be1bdcabf
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.