dockerfile

A command that creates a multi-stage Dockerfile, which describes how to build and run an application in a container. It includes build caching, a non-root user, and health checks.

In plain words
What is it for?
Use it to create a Dockerfile for an application that builds efficiently, runs without root privileges, and reports whether it is working.
Why use it?
It avoids writing container build instructions from scratch and helps address common concerns around image size, security, and container health.

Command

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/mwguerra/claude-code-plugins/dockerfile
Clone the repo
git clone --depth 1 https://github.com/mwguerra/claude-code-plugins
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 437 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00016 $0.00437
Opus 5 $0.00008 $0.00218
Sonnet 5 $0.00003 $0.00087
Haiku 4.5 $0.00002 $0.00044

Measured 2d ago against content hash d471bac3a564, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dockerfile scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

CMD curl -f http://localhost:3000/health || exit 1
docker-specialist/commands/dockerfile.md · 77 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 77 lines · 16 tokens per session scan A d471bac3a564

Subscribe to this mod's changes

dockerfile is a command published in the GitHub repository mwguerra/claude-code-plugins (35 stars, last pushed 4mo ago), with no licence file. It adds 16 tokens to every session and 437 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.