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Devcontainer Setup

Listed
trailofbits·vlatest·other·CC-BY-SA-4.0

Automates reproducible development environments using Dev Containers, ensuring consistent tooling and dependencies across teams.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add trailofbits/skills --skill devcontainer-setup -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

trailofbits

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill failed 2 of 6 checks. A failure is not proof of bad intent; it means something in the code needs a human to look at it before you run it.

  • No undeclared network calls: failed

    Contacts 2 hosts that are neither well-known infrastructure nor declared in the skill's frontmatter: claude.ai, fnm.vercel.app.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

    Hosts contacted

    github.comsource hostclaude.aiundeclaredfnm.vercel.appundeclared

    What it found

    • plugins/devcontainer-setup/skills/devcontainer-setup/resources/Dockerfile:76contacts claude.ai
      RUN curl -fsSL https://claude.ai/install.sh | bash && \
    • plugins/devcontainer-setup/skills/devcontainer-setup/resources/Dockerfile:90contacts fnm.vercel.app
      RUN curl -fsSL https://fnm.vercel.app/install | bash -s -- --install-dir "$FNM_DIR" --skip-shell && \

  • No pipe-to-shell installers: failed

    Runs code fetched at install time in 4 places.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

    What it found (3 of 4)

    • plugins/devcontainer-setup/skills/devcontainer-setup/references/dockerfile-best-practices.md:54remote script piped into a shell
      RUN set -o pipefail && curl -fsSL https://example.com/install.sh | bash
    • plugins/devcontainer-setup/skills/devcontainer-setup/resources/Dockerfile:76remote script piped into a shell
      RUN curl -fsSL https://claude.ai/install.sh | bash && \
    • plugins/devcontainer-setup/skills/devcontainer-setup/resources/Dockerfile:90remote script piped into a shell
      RUN curl -fsSL https://fnm.vercel.app/install | bash -s -- --install-dir "$FNM_DIR" --skip-shell && \

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • Pinned to a commit: passed

    Scanned trailofbits/skills at 82fe822625.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
82fe822625
Manifest
plugins/devcontainer-setup/skills/devcontainer-setup/SKILL.md
Scanned
8 files, 1,736 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill automates the setup of development containers. It allows users to quickly configure and launch environments with pre-installed tools and dependencies, streamlining the development workflow. The skill handles downloading container definitions and ensuring a consistent environment across different machines.

When to use it

  • You need a reproducible development environment for a project.
  • You want to avoid manually installing dependencies on your local machine.
  • You're collaborating with others and need to ensure everyone uses the same tools.
  • You are onboarding new developers to a project and want to simplify their setup process.

Key capabilities

  • Downloads container definitions from remote sources.
  • Configures and launches development containers.
  • Ensures consistent environments across different machines.

Example prompts

  • "Setup the devcontainer for this repository."
  • "Launch the development container defined in .devcontainer/devcontainer.json."
  • "Configure a development environment with Node.js 18 and VS Code."

Tips & gotchas

The skill requires a valid .devcontainer directory or configuration file to function correctly. Ensure that the specified container definition is accessible and compatible with your system's resources.