Container Engineering Agent Skill

Builds, reviews, and troubleshoots Dockerfiles and Docker Compose configurations for secure, reproducible, and optimized container…

Context cost
525 tokensestimated from the bundle, loaded when it triggers
Bundle
1 file · 2.1 kBtext throughout, nothing executable
Licence
MITthe author’s own terms
Last change
—no release on file
Servers it uses
Noneruns standalone

What it does

Build, review, or troubleshoot Dockerfiles and Compose-based environments with reproducible builds, small runtime images, safe configuration, dependency readiness, and deployment-aware verification. Use for container or local service environments.

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

devopsdocker
Filed under

Cloud & DevOps

The skill itself

A skill is instructions the model reads, and here they are in full: the front matter loads with every session, and the body below it loads when the skill triggers.

SKILL.md2.1 kB
--- name: containers ---
6# Container Engineering
7
8## 使用范围
9
10用于 Dockerfile、Docker Compose 和容器化本地环境的设计、修改或故障排查。先确认目标是开发、测试、CI 还是生产,检查运行时版本、构建上下文、现有镜像策略和部署平台;同一套容器配置不应在未验证时假定适用于所有环境。
11
12## 工作方式
13
14- 使用锁文件和明确的基础镜像版本来获得可复现构建,并让构建缓存与源代码变化边界对应。构建上下文保持最小,.dockerignore 排除依赖目录、密钥、测试产物和无关文件。
15- 将编译依赖与运行时依赖分开。多阶段构建、最小运行时镜像和非 root 用户应在兼容应用的前提下采用;不要为了镜像体积破坏调试、证书或必要系统库。
16- 配置和凭据通过运行时环境、受控挂载或平台密钥注入;不得烘焙进镜像层、Compose 文件、构建参数历史或日志。开发默认值不能悄悄成为生产默认值。
17- Compose 服务应明确端口、网络、volume、启动依赖和健康语义。depends_on 不等于依赖已可用;应用自身仍要处理依赖未就绪和短暂重连。
18- 对外暴露端口、写入挂载路径和用户权限应最小化。数据卷、数据库和缓存默认隔离于本次测试,避免误连共享或生产资源。
19- 变更后运行与目标相符的 build、启动或测试,并检查镜像、日志和健康结果。停止、清理、推送或部署会影响外部状态,必须在得到相应授权后执行。
20
21## 交付与边界
22
23说明目标环境、镜像与运行时版本、配置来源、端口/volume、依赖就绪策略和已执行验证。Kubernetes、云镜像仓库、编排平台和发布审批规则由项目级流程决定。
24
This is the whole of SKILL.md. Install the skill to get it and everything beside it.
In the file
SKILL.md67 words
Files1
LicenceMIT
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈70
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
455
on trigger
The instruction body, read only when the skill fires.
0.26%
of a 200k window
Ten skills this size would take about 3% of the window before you open a file.
050k100k150k200k context window

525 tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Small enough to keep loaded permanently without thinking about it.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md, shown in full above.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

Its SKILL.md does not declare which tools it asks the agent for, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for
Writes filesnot declared
Network accessnot declared

This SKILL.md carries no allowed-tools line, so neither is declared. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

1 file, 2.1 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in.

  • SKILL.md2.1 kB
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the bundle is 1 file you can review in full before installing. The MIT licence covers the templates and examples as well as the instructions.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Container Engineering · 525 tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/container-engineering/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/container-engineering" ] && { [ ! -e .claude/skills/container-engineering ] || { mv .claude/skills/container-engineering "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/container-engineering" .claude/skills/ && echo "Installed .claude/skills/container-engineering"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add weiweimhy/container-engineering

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/container-engineering/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/container-engineering/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/container-engineering" ] && { [ ! -e ~/.claude/skills/container-engineering ] || { mv ~/.claude/skills/container-engineering "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/container-engineering" ~/.claude/skills/ && echo "Installed ~/.claude/skills/container-engineering" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/container-engineering/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where. It appears as containers in Gemini CLI, Codex, Copilot and Grok (its own name); Claude Code lists it by the folder name, container-engineering.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Versionnot versioned
Publishedno release date on file
PriceFree
Referenceweiweimhy/container-engineering

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

Reviews

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