CtrlK
BlogDocsLog inGet started
Tessl Logo

render-docker

Builds and deploys Docker containers on Render—Dockerfiles, multi-stage builds, Blueprint Docker fields, private registries, layer caching, and platform constraints. Use when the user mentions Docker, Dockerfile, container images, multi-stage builds, container registry, GHCR, ECR, BuildKit, dockerContext, runtime docker or image, or optimizing Docker builds on Render.

80

Quality

100%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide

SecuritybySnyk

Passed

No findings from the security scan

SKILL.md
Quality
Evals
Security

Quality

Content

100%Weight 40%Scale 1-3

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A well-structured reference/configuration skill: lean body with concrete, actionable guidance and clean progressive disclosure into three genuinely useful reference files. The main body's YAML example is explicitly illustrative, but executable copy-paste templates are correctly deferred to the references.

DimensionReasoningScore

Conciseness

Lean, table- and bullet-driven body that assumes Claude's competence — it never explains what Docker or BuildKit is, and every section delivers actionable specifics with minimal tokens.

3 / 3

Actionability

Provides a concrete Blueprint field table, an example YAML sketch, specific commands ('/bin/sh -c \'set -e; ./migrate && exec node server.js\''), exact paths (/etc/secrets/, 0.0.0.0:$PORT), and digest-pinning guidance, with copy-paste Dockerfile templates in the references.

3 / 3

Workflow Clarity

Topic-organized with an explicit 'When to Use' scenario list and clearly sequenced sub-guidance in the references (numbered registry setup and debugging steps); no destructive/batch operation requires a validate-fix-retry loop here.

3 / 3

Progressive Disclosure

Clear overview in SKILL.md pointing to three real, one-level-deep reference files, each signaled inline and mapped in a document→contents References table; content is appropriately split rather than monolithic.

3 / 3

Total

12

/

12

Passed

Description

100%Weight 40%Scale 1-3

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong, specific description that states concrete capabilities, includes a comprehensive natural-language trigger list, and clearly answers both what and when in third-person voice. The only minor risk is a slightly long trigger enumeration, but every term earns its place.

DimensionReasoningScore

Specificity

Names multiple concrete capabilities — 'Builds and deploys Docker containers… Dockerfiles, multi-stage builds, Blueprint Docker fields, private registries, layer caching, and platform constraints' — rather than vague language.

3 / 3

Completeness

It explicitly answers both what ('Builds and deploys Docker containers on Render…') and when ('Use when the user mentions…'), with third-person voice and no first/second person.

3 / 3

Trigger Term Quality

The 'Use when the user mentions Docker, Dockerfile, container images, multi-stage builds, container registry, GHCR, ECR, BuildKit, dockerContext, runtime docker or image' list covers natural terms a user would actually say.

3 / 3

Distinctiveness Conflict Risk

Scoped specifically to Docker deployments on Render with niche-distinct triggers (GHCR, ECR, BuildKit, dockerContext, runtime docker/image), making conflict with non-Docker skills unlikely.

3 / 3

Total

12

/

12

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
openai/plugins
Reviewed

Table of Contents

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.