What is test-pr-docker?

A command that tests a pull request's Docker image build through GitHub Actions. It labels the pull request, watches the build, and gives steps for pulling and checking the resulting image.

Use it to trigger and monitor a pull-request build, then pull the generated image and verify it on a Linux machine.

It provides a repeatable way to verify that proposed changes can be packaged into a Docker image before they are merged. A pull request is a request to review and merge code changes.

test-pr-docker — Command for Claude Code by bybren-llc: A command that tests a pull request's Docker image…

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/bybren-llc/rendertrust/test-pr-docker

Clone the repo

git clone --depth 1 https://github.com/bybren-llc/rendertrust

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/bybren-llc/rendertrust/test-pr-docker.svg)](https://agentmods.dev/commands/bybren-llc/rendertrust/test-pr-docker)

Your own site

<a href="https://agentmods.dev/commands/bybren-llc/rendertrust/test-pr-docker"><img src="https://agentmods.dev/badge/commands/bybren-llc/rendertrust/test-pr-docker.svg" alt="Measured on agentmods" height="20"></a>

Per session 7 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 692 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. Scan, not verified.

Origin 97% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.00007	$0.00692
Opus 5	$0.00003	$0.00346
Sonnet 5	$0.00001	$0.00138
Haiku 4.5	$0.00001	$0.00069

Measured today against content hash cfe63f9188c5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

test-pr-docker 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 today.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl http://localhost:3000/api/health

Origin

This is a copy

97% identical to test-pr-docker — 12 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/commands/test-pr-docker.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

📋 TEMPLATE: This command is a template. See "Customization Guide" below to adapt for your infrastructure.

Test the Docker registry PR workflow by adding the build-docker-image label to a PR and verifying the build.

Workflow

1. Get PR Number

If argument provided ($1):

Use as PR number
Fetch PR details: gh pr view $1

If no argument:

Check if current branch has open PR
Extract PR number from branch

2. Add Label to PR

Add build-docker-image label:

gh pr edit {PR-number} --add-label "build-docker-image"

Confirm label added:

gh pr view {PR-number} --json labels

3. Monitor Build

Explain to user:

GitHub Actions will build Docker image (~5-10 min)
Image will be tagged as pr-{number}
Build status visible in PR checks
Can monitor at: https://ByBren-LLC/rendertrust/actions

Provide link to PR:

gh pr view {PR-number} --web

4. Verification Steps

Once build completes, guide user through verification:

On Linux machine:

# Pull PR-specific image
./scripts/dev-docker.sh pull-pr {PR-number}

# Verify image exists
docker images | grep rendertrust

# REN-400: Use {{PROJECT}}_IMAGE_TAG environment variable instead of editing compose file
# Set the tag before running docker compose:
export {{PROJECT}}_IMAGE_TAG=pr-{PR-number}

# Or update docker-compose.staging.yml image tag temporarily:
# Change: image: {{REGISTRY}}/rendertrust/dev:${{PROJECT}_IMAGE_TAG:-latest}
# To:     image: {{REGISTRY}}/rendertrust/dev:pr-{PR-number}

# Restart with PR image
./scripts/dev-docker.sh restart

# Verify services running
./scripts/dev-docker.sh status

# Check health
curl http://localhost:3000/api/health

5. Testing Complete

After verification:

# Revert docker-compose.dev.yml
# Remove label to stop builds
gh pr edit {PR-number} --remove-label "build-docker-image"

Success Criteria

✅ Label added successfully
✅ GitHub Actions build triggered
✅ Image built with pr-{number} tag
✅ Image pullable on Linux machine
✅ Services start correctly
✅ Hot-reload verified
✅ Health check passes

Read the full file on GitHub · 124 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.

today First seen · 124 lines · 7 tokens per session scan A cfe63f9188c5

Subscribe to this mod's changes

test-pr-docker is a command published in the GitHub repository bybren-llc/rendertrust (7 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 7 tokens to every session and 692 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 97% identical to test-pr-docker, differing in 12 lines, and is treated as a copy.

CI and CD Containers DevOps and cloud Testing

test-pr-docker