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.
npx skills add aj-geddes/useful-ai-prompts --skill docker-containerizationgit clone --depth 1 https://github.com/aj-geddes/useful-ai-promptsWrote 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.
[](https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/docker-containerization)<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/docker-containerization"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/docker-containerization/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/docker-containerization"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/docker-containerization.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00043 | $0.00614 |
| Opus 5 | $0.00022 | $0.00307 |
| Sonnet 5 | $0.00009 | $0.00123 |
| Haiku 4.5 | $0.00004 | $0.00061 |
Grade A, and why
docker-containerization 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 9d 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 rootlowPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
- Run as root user Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
How it starts
The opening of the file, as written. The whole thing — 99 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Docker Containerization
Table of Contents
Overview
Build production-ready Docker containers following best practices for security, performance, and maintainability.
When to Use
- Containerizing applications for deployment
- Creating Dockerfiles for new services
- Optimizing existing container images
- Setting up development environments
- Building CI/CD container pipelines
- Implementing microservices
Quick Start
Minimal working example:
# Multi-stage build for Node.js application
# Stage 1: Build
FROM node:18-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY . .
RUN npm run build
# Stage 2: Production
FROM node:18-alpine
WORKDIR /app
# Copy only production dependencies and built files
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/dist ./dist
COPY package*.json ./
# Security: Run as non-root user
RUN addgroup -g 1001 -S nodejs && adduser -S nodejs -u 1001
USER nodejs
EXPOSE 3000
CMD ["node", "dist/index.js"]
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| Multi-Stage Builds | Multi-Stage Builds |
| Optimization Techniques | Optimization Techniques |
| Security Best Practices | Security Best Practices, Environment Configuration |
| Docker Compose for Multi-Container | Docker Compose for Multi-Container |
| .dockerignore File | .dockerignore File |
| Python | Python (Django/Flask), Java (Spring Boot), Go |
Best Practices
✅ DO
- Use official base images
- Implement multi-stage builds
- Run as non-root user
- Use .dockerignore
- Pin specific versions
- Include health checks
- Scan for vulnerabilities
- Minimize layers
- Use build caching effectively
What ships with it
8 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/docker-compose-for-multi-container.md 1.1 KB
- references/dockerignore-file.md 203 B
- references/multi-stage-builds.md 615 B
- references/optimization-techniques.md 622 B
- references/python.md 941 B
- references/security-best-practices.md 761 B
- scripts/validate-pipeline.sh 502 B runs code
- templates/pipeline.yaml 665 B
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.
- 9d ago First seen · 99 lines · 43 tokens per session scan A 86af45d28bc4
docker-containerization is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (338 stars, last pushed 6mo ago), licensed MIT. It adds 43 tokens to every session and 614 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A 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.
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