containerization

containerization is a cursor rule for Cursor from MN-Lizard-Team/aiyu-multi-agent. It costs 15 tokens per session (1,057 once invoked), scanned B, original, Apache-2.0.

Guidance for building, shipping, and running applications in Docker containers and Kubernetes. Containers package an application with what it needs to run, while Kubernetes manages containerized applications across machines.

In plain words
What is it for?
Use it when writing Dockerfiles, choosing container image layouts, configuring Kubernetes workloads, or preparing containerized applications for production.
Why use it?
It helps reduce oversized images, unsafe containers, difficult deployments, and inconsistent behavior between development and production.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/. Also seen: mentions Cursor.

Good fit Use it when writing Dockerfiles, choosing container image layouts, configuring Kubernetes workloads, or preparing containerized applications for production.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/mn-lizard-team/aiyu-multi-agent/containerization
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.

Clone the repo
git clone --depth 1 https://github.com/MN-Lizard-Team/aiyu-multi-agent

Made for: Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for containerization

README.md
[![agentmods](https://agentmods.dev/badge/rules/mn-lizard-team/aiyu-multi-agent/containerization.svg)](https://agentmods.dev/rules/mn-lizard-team/aiyu-multi-agent/containerization)
Your own site
<a href="https://agentmods.dev/rules/mn-lizard-team/aiyu-multi-agent/containerization"><img src="https://agentmods.dev/badge/rules/mn-lizard-team/aiyu-multi-agent/containerization.svg" alt="Measured on agentmods" height="20"></a>
Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,057 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 5.1 $0.00015 $0.01057
Opus 5 $0.00008 $0.00528
Sonnet 5 $0.00003 $0.00211
Haiku 4.5 $0.00002 $0.00106

Measured 4d ago against content hash 1d6afc3a2c8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade B, and why

containerization scanned grade B 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 4d 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.

- **Never run as root**: `USER 1000` in Dockerfile
.cursor/rules/skills/containerization.mdc · 196 lines

How it starts

The opening of the file, as written. The whole thing — 196 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill: containerization

Cursor Agent-Requested Rule — applied when AI determines relevance.


Containerization - Docker & Kubernetes

Build once, run anywhere. Container best practices for production workloads.


Docker Best Practices

Dockerfile Principles

# ✅ GOOD — Multi-stage build, minimal final image
FROM node:18-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY . .
RUN npm run build

FROM node:18-alpine
RUN apk add --no-cache dumb-init
WORKDIR /app
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules
EXPOSE 3000
USER node
CMD ["dumb-init", "node", "dist/main.js"]

# ❌ BAD — Single stage, large image, running as root
FROM node:18
COPY . .
RUN npm install
CMD ["node", "server.js"]

Image Optimization

Technique Benefit
Multi-stage builds Smaller final image, no build tools in production
Alpine/slim base Reduce image size by 50-90%
Layer caching Order Dockerfile by change frequency
.dockerignore Exclude node_modules, .git, logs
Non-root user Security: RUN adduser -D appuser

Kubernetes Patterns

Pod Design

apiVersion: v1
kind: Pod
metadata:
  name: web-app
spec:
  containers:
  - name: app
    image: myapp:v1.2.3
    resources:
      requests:
        memory: "256Mi"
        cpu: "250m"
      limits:
        memory: "512Mi"
        cpu: "500m"
    livenessProbe:
      httpGet:
        path: /health
        port: 8080
      initialDelaySeconds: 30
      periodSeconds: 10
    readinessProbe:
      httpGet:
        path: /ready
        port: 8080
      initialDelaySeconds: 5
      periodSeconds: 5

Deployment Strategy

Strategy Use Case Downtime
Rolling Update Default, gradual replacement Zero
Recreate Complete replacement, simple Yes
Blue-Green Instant switch, easy rollback Zero
Canary Test with subset of traffic Zero

Read the full file on GitHub · 196 lines

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. 4d ago First seen · 196 lines · 15 tokens per session scan B 1d6afc3a2c8d

Subscribe to this mod's changes

containerization is a cursor rule published in the GitHub repository MN-Lizard-Team/aiyu-multi-agent (7 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 15 tokens to every session and 1,057 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.