docker

A guide to packaging applications in Docker containers, which bundle software with the files and dependencies it needs to run. It covers Dockerfiles, Compose configurations, multi-stage builds, production use, and CI/CD automation.

In plain words
What is it for?
Use it to write Dockerfiles, define multiple services with Docker Compose, create smaller production images, and run container builds in delivery pipelines.
Why use it?
It helps developers create repeatable application environments and reduce differences between local development, testing, and deployment.

Skill for Claude CodeCodex

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 skills/mte90/dotfiles/docker
Any agent
npx skills add Mte90/dotfiles --skill docker
Clone the repo
git clone --depth 1 https://github.com/Mte90/dotfiles

Made for: Claude Code, Codex.

Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,306 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 3 findings. 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 $0.00020 $0.02306
Opus 5 $0.00010 $0.01153
Sonnet 5 $0.00004 $0.00461
Haiku 4.5 $0.00002 $0.00231

Measured 2d ago against content hash 61eba6207219, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade D, and why

docker scanned grade D with 3 findings 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

2. **Don't run as root** - use USER instruction

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

&& rm -rf /var/lib/apt/lists/*

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:8000/health || exit 1
.config/opencode/skills/docker/SKILL.md · 433 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 · 433 lines · 20 tokens per session scan D 61eba6207219

Subscribe to this mod's changes

docker is a skill published in the GitHub repository Mte90/dotfiles (51 stars, last pushed 6d ago), with no licence file. It adds 20 tokens to every session and 2,306 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it D with 3 findings (asks for root, recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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