Docker sandbox

Skill ariana-dot-dev/cloud-sandbox-vm-skills/skills/docker-sandbox

Run Docker and containers in a cloud sandbox — a full root Ubuntu VM with Docker preinstalled and real kernel access, so `docker build`/`docker run`/compose all work (unlike isolate-based sandboxes that can't run Docker). 4 vCPU / 8 GB / 80 GB, per-second billing. Use to build images, run compose stacks, or test containers off-host.From its SKILL.md

Install

npx -y skills add ariana-dot-dev/cloud-sandbox-vm-skills --skill docker-sandbox

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

4 things to look at

reads credentialsReads from 1 credential source: `BOX_API_KEY`.
2 stars2 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.
runs commandsInstructs the agent to run 7 commands, including `curl -fsSL https://box.ascii.dev/install | sh` and 6 more.
fetches URLsInstructs the agent to fetch 1 URL, including https://box.ascii.dev/install.

SKILL.md

1.4 KB, 286 tokens by cl100k_base, as published. Nobody here has run it

Docker sandbox (Box)

Use this when a task needs Docker: building an image, running docker compose, or testing a container. Many sandboxes (V8 isolates, restricted microVMs) can't run Docker at all — Box is a full VM with Docker preinstalled, so it just works.

Why Box

Docker preinstalled, real machine — docker build, docker run, compose stacks.
80 GB disk — room for images and layers.
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

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

EU-only; 100 active VMs soft cap; disk-level snapshots (containers don't survive stop/resume — restart compose after resume).

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.