multi-stage-dockerfile: a Claude Code skill by GitHub
Official
For developers who want a smaller, safer Docker image built in stages. Skip it if you do not use containers or need a full CI or Kubernetes setup.
- Score
- 74of 100
- Rank
- #135of 239
- Installs
- 31.5Kon skills.sh
- Security
- Mixed 5 scanners
- Updated
- 2026
- Context
- ~23tokens always
Install
npx skills add https://github.com/github/awesome-copilot --skill multi-stage-dockerfile
Run it in your terminal. View the source
Using the Claude app rather than Claude Code? You can add a skill there too. How to add it in the app
What does multi-stage-dockerfile do?
multi-stage-dockerfile is a skill, first written as a GitHub Copilot prompt, that gives Claude a checklist for multi-stage Dockerfiles in any language. It separates a builder stage for compiling and installing dependencies from a runtime stage that receives only the built artifacts, with stages named using AS. Base images should be official, minimal and pinned to exact tags such as python:3.11-slim, with distroless or Alpine considered for runtime. It orders layers so rarely changing steps come first, uses .dockerignore, runs as a non-root USER, keeps build secrets out of the final image, and adds a HEALTHCHECK. It is guidance only, with no scripts.
When should you use multi-stage-dockerfile?
Use it when
- Your Docker image is large and full of build tools
- You are containerizing an app for the first time
- You want the final container to run as non-root
Skip it when
- Your project does not ship as a container
- You need deployment, orchestration or CI pipelines
What it needs and what it can touch
You need
- Docker
From reading its instructions, not from running it.
Why it scores 74
Strongest on upkeep (100 of 100), weakest on adoption (48).
Is multi-stage-dockerfile safe to install?
At least one scanner raised a medium warning. Read the results below. Scanners often miss what other scanners catch, and a skill can change after a scan. Read its source before you install it.
| Scanner | Result | Date |
|---|---|---|
| Gen Agent Trust Hub | Passed | Sep 15, 2026 |
| Socket | Passed | Sep 15, 2026 |
| Snyk | Low risk | Sep 15, 2026 |
| Runlayer | Medium risk | Feb 25, 2026 |
| ZeroLeaks | Passed | Apr 15, 2026 |
Details
- Installs
- 31,535
- Repository stars
- 41,037
- Last repository change
- Tokens always loaded
- about 23
- Tokens when used
- about 546
- License
- MIT
- Data confidence
- High
Did it do the job for you?
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