build-image

build-image is a command for Claude Code from rohitg00/awesome-claude-code-toolkit. It costs 19 tokens per session (428 once invoked), scanned A, original, Apache-2.0.

A command that builds a Docker image and checks its size, layers, startup behavior, supported CPU platforms, and known vulnerabilities. A Docker image is the packaged template used to run an application in a container.

In plain words
What is it for?
Use it to build, tag, smoke-test, vulnerability-scan, and report on development, release, or CI Docker images.
Why use it?
It standardizes image creation and helps avoid bloated images, poor caching, incompatible architectures, and unreviewed security issues.

Command for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the docker-helper plugin — 2 commands shipped together

About the project

Awesome Claude Code Toolkit is a curated collection of extensions and configuration for Claude Code, including agents, skills, commands, plugins, hooks, rules, templates, MCP configurations, and companion apps. It is for Claude Code users who want ready-made workflows and integrations for different development tasks. The catalogue add-ons are selected components from this toolkit.

rohitg00/awesome-claude-code-toolkit · 2,591 stars · on GitHub

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 commands/rohitg00/awesome-claude-code-toolkit/build-image
Clone the repo
git clone --depth 1 https://github.com/rohitg00/awesome-claude-code-toolkit

Made for: Claude Code.

Or install docker-helper, the plugin that ships this one along with the rest of its 2 commands.

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 build-image

README.md
[![agentmods](https://agentmods.dev/badge/commands/rohitg00/awesome-claude-code-toolkit/build-image.svg)](https://agentmods.dev/commands/rohitg00/awesome-claude-code-toolkit/build-image)
Your own site
<a href="https://agentmods.dev/commands/rohitg00/awesome-claude-code-toolkit/build-image"><img src="https://agentmods.dev/badge/commands/rohitg00/awesome-claude-code-toolkit/build-image.svg" alt="Measured on agentmods" height="20"></a>
Per session 19 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 428 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00019 $0.00428
Opus 5 $0.00010 $0.00214
Sonnet 5 $0.00004 $0.00086
Haiku 4.5 $0.00002 $0.00043

Measured 2d ago against content hash 535d3a5add77, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

build-image 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 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.

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.

plugins/docker-helper/commands/build-image.md · 50 lines

What it actually says

Build a Docker image with best practices for caching, security, and size optimization.

Steps

  1. Read the existing Dockerfile or generate one if missing.
  2. Analyze the build context:
    • Check .dockerignore exists and excludes unnecessary files.
    • Identify the base image and its size.
    • Map build stages and layer count.
  3. Build the image with build arguments:
    • docker build -t <name>:<tag> --build-arg VERSION=<ver> .
    • Use BuildKit for improved caching: DOCKER_BUILDKIT=1.
    • Add --platform linux/amd64,linux/arm64 for multi-arch if needed.
  4. Verify the build:
    • Check final image size: docker images <name>:<tag>.
    • Run a quick smoke test: docker run --rm <name>:<tag> <health-command>.
    • Scan for vulnerabilities: docker scout cves <name>:<tag>.
  5. Tag appropriately:
    • <name>:latest for development.
    • <name>:<version> for releases.
    • <name>:<git-sha-short> for CI builds.
  6. Report build results and image details.

Format

Docker Build: <name>:<tag>
Base: <base-image>
Size: <size>MB (layers: <N>)
Build time: <duration>

Vulnerabilities: <C>critical, <H>high, <M>medium
Smoke test: <pass/fail>

Push: docker push <registry>/<name>:<tag>

Rules

  • Always use specific base image tags, not latest.
  • Include a .dockerignore to minimize build context.
  • Run as non-root user in the final image.
  • Use multi-stage builds to keep the final image minimal.
  • Add health check instruction (HEALTHCHECK) for production images.
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 · 50 lines · 19 tokens per session scan A 535d3a5add77

Subscribe to this mod's changes

build-image is a command published in the GitHub repository rohitg00/awesome-claude-code-toolkit (2,591 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 19 tokens to every session and 428 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 2026-09-03.