create-dockerfile SKILL.md skillA
create-dockerfile from pjt222/agent-almanac is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add pjt222/agent-almanac/create-dockerfile@v1.0Pins v1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- pjt222/agent-almanac
- Path
i18n/caveman-lite/skills/create-dockerfile/SKILL.md- Versions recorded
- 5
- Latest version
- v1.0, committed Aug 17, 2026
- First version recorded
- Apr 19, 2026
- Size
- 6,427 bytes
- Repository stars
- 43
- License
- MIT
Create general-purpose Dockerfiles for Node.js, Python, Go, Rust, and Java projects. Covers base image selection, dependency installation, user permissions, COPY patterns, ENTRYPOINT vs CMD, and .dockerignore. Use when containerizing an application for the first time, creating a consistent build/runtime environment, preparing an app for cloud deployment or Docker Compose, or when no existing Dockerfile is present in the project.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Create Dockerfile Write a production-ready Dockerfile for general-purpose application projects. ## When to Use - Containerizing a Node.js, Python, Go, Rust, or Java application - Creating a consistent build/runtime environment - Preparing an application for cloud deployment or Docker Compose - No existing Dockerfile in the project ## Inputs - **Required**: Project language and entry point (e.g., `npm start`, `python app.py`) - **Required**: Dependency manifest (package.json, requirements.txt, go.mod, Cargo.toml, pom.xml) - **Optional**: Target environment (development or production) - **Optional**: Exposed ports ## Procedure ### Step 1: Choose Base Image | Language | Dev Image | Prod Image | Size | |---|---|---|---| | Node.js | `node:22-bookworm` | `node:22-bookworm-slim` | ~200MB | | Python | `python:3.12-bookworm` | `python:3.12-slim-bookworm` | ~150MB | | Go | `golang:1.23-bookworm` | `gcr.io/distroless/static` | ~2MB | | Rust | `rust:1.82-bookworm` | `debian:bookworm-slim` | ~80MB | | Java | `eclipse-temurin:21-jdk` | `eclipse-temurin:21-jre` | ~200MB | **Got:** Select the slim/distroless variant for production images. ### Step 2: Write Dockerfile (by language) …
Read the whole file at its exact version.
How to install
mdr add pjt222/agent-almanac/create-dockerfile@sha256:a8fde49f39cf8e17The line at the top of this page pins the label v1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_3aucuswhm53lmgzb)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Apr 19, 2026 and Aug 17, 2026, about one every 30 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0 latest | 2026-08-17 | a784899 | 6,427 B | A | view · diff |
| v1.0 | 2026-06-05 | 33b561c | 6,398 B | A | view · diff |
| v1.0 | 2026-06-05 | 75ded7a | 6,394 B | A | view · diff |
| v1.0 | 2026-04-23 | bc66d7e | 6,442 B | A | view · diff |
| v1.0 | 2026-04-19 | e334ebd | 6,475 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6427 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
pjt222/agent-almanac · 43 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3aucuswhm53lmgzb GET https://markdownregistry.com/api/v1/resolve?ref=pjt222/agent-almanac/create-dockerfile GET https://markdownregistry.com/api/v1/blob/a8fde49f39cf8e173f4c66a2cccfe80434a6c5435805562c40fd5c61896f4f6c
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.