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Dockerfile Basics

Checked
pluginagentmarketplace·vlatest·cloud

This skill teaches you the fundamentals of Dockerfiles, enabling you to build and manage container images for consistent deployments.

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 pluginagentmarketplace/custom-plugin-docker --skill dockerfile-basics -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

pluginagentmarketplace

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 passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • 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 undeclared network calls: passed

    Makes no network calls.

    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.

  • 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.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

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

  • Pinned to a commit: passed

    Scanned pluginagentmarketplace/custom-plugin-docker at d417263e40.

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

Commit
d417263e40
Manifest
skills/dockerfile-basics/SKILL.md
Scanned
3 files, 173 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 provides foundational knowledge and assistance with Dockerfile creation. It can help generate basic Dockerfiles, explain common instructions like FROM, RUN, COPY, and CMD, and troubleshoot simple errors in existing files. The goal is to enable users to package applications into containers for consistent deployment across different environments.

When to use it

  • You need a starting point for creating a Dockerfile for your application.
  • You're unsure how to translate an application’s dependencies and setup steps into Dockerfile instructions.
  • You are encountering errors in your existing Dockerfile and require assistance understanding the cause.
  • You want to learn more about common Dockerfile commands and their usage.

Key capabilities

  • Dockerfile generation
  • Explanation of Dockerfile instructions (e.g., FROM, RUN, COPY)
  • Troubleshooting assistance for Dockerfiles

Example prompts

  • "Create a basic Dockerfile for a Python application with requirements from requirements.txt."
  • "Explain what the CMD instruction does in a Dockerfile."
  • “My Dockerfile is failing to build, can you help me identify the error?”

Tips & gotchas

The skill assumes some familiarity with the application being containerized; it's not intended to automatically understand complex software architectures. Providing clear and concise instructions about your application’s needs will yield better results.