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 niels-emmer/myace --skill container-buildgit clone --depth 1 https://github.com/niels-emmer/myaceWrote 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/niels-emmer/myace/container-build)<a href="https://agentmods.dev/skills/niels-emmer/myace/container-build"><img src="https://agentmods.dev/badge/skills/niels-emmer/myace/container-build/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/niels-emmer/myace/container-build"><img src="https://agentmods.dev/badge/skills/niels-emmer/myace/container-build.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00023 | $0.00283 |
| Opus 5 | $0.00012 | $0.00142 |
| Sonnet 5 | $0.00005 | $0.00057 |
| Haiku 4.5 | $0.00002 | $0.00028 |
Grade A, and why
Container Build scanned grade A with 0 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 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Purpose
Build containers that are small, secure, and reproducible.
Checklist
- Multi-stage builds: build stage with full SDK, production stage with only runtime deps.
- Base image: prefer distroless or scratch for production; use Alpine as a pragmatic minimum.
- Layer caching: order Dockerfile instructions from least to most frequently changing (deps first, code last).
- Non-root user: production containers run as a non-root user, not root.
- Vulnerability scanning: scan images for CVEs before pushing to registry (trivy, grype, or equivalent).
- Image tagging: tag with commit SHA + semantic version;
latestis never used in production. - Reproducible builds: pin base image digests, not tags.
Expected output
A Dockerfile producing minimal, scanned, non-root containers with pinned base images and multi-stage separation.
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 · 26 lines · 23 tokens per session scan A e22a1ca2a639
Container Build is a skill published in the GitHub repository niels-emmer/myace (1 stars, last pushed 3d ago), licensed MIT. It adds 23 tokens to every session and 283 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other skills, from other repositories
loom-kubernetes
Kubernetes deployment, cluster architecture, security, and operations.
loom-docker
Docker and container expertise.
loom-kustomize
Kubernetes-native configuration management with Kustomize.
loom-karpenter
Kubernetes node autoscaling and cost optimization with Karpenter.
docker-best-practices
A guide to writing Dockerfiles and building containers, which package an application with what it needs to run. It covers smaller images, faster rebuilds, fixed base versions, safer users, and keeping secrets out.
build-mcpb
This skill should be used when the user wants to "package an MCP server", "bundle an MCP", "make an MCPB", "ship a local MCP server", "distribute a local MCP", discusses ".mcpb files", mentions bundling a Node or Python runtime with their MCP server, or needs an MCP server that interacts with the local filesystem…