How do I install the Docker Sandbox skill?

Run npx skillmds@latest add ariana-dot-dev/docker-sandbox in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Docker Sandbox safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Docker Sandbox?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Docker Sandbox free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Docker Sandbox?

ariana-dot-dev (@ariana-dot-dev) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Docker Sandbox by ariana-dot-dev — Agent Skill

Name: Docker Sandbox
Author: ariana-dot-dev

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.

File contents

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).

Frequently asked questions