dockerfile-generator
Dockerfile Generator - Auto-activating skill for DevOps Basics. Triggers on: dockerfile generator, dockerfile generator Part of the DevOps Basics skill category.
34
3%
Does it follow best practices?
Impact
90%
1.00xAverage score across 3 eval scenarios
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./planned-skills/generated/01-devops-basics/dockerfile-generator/SKILL.mdQuality
Discovery
7%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This description is extremely weak, essentially restating the skill name without describing concrete capabilities, natural trigger terms, or explicit usage guidance. It reads as auto-generated boilerplate with a duplicated trigger term and no actionable detail for Claude to differentiate it from other skills.
Suggestions
Add specific concrete actions such as 'Generates Dockerfiles for applications, configures multi-stage builds, selects appropriate base images, and optimizes layer caching'.
Add an explicit 'Use when...' clause with natural trigger terms like 'Docker', 'Dockerfile', 'containerize', 'container image', 'docker build', '.dockerfile'.
Remove the duplicated trigger term and replace the boilerplate 'Part of the DevOps Basics skill category' with meaningful context about what distinguishes this skill from other DevOps-related skills.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | The description says 'Dockerfile Generator' but does not list any concrete actions like 'creates Dockerfiles from project configurations', 'adds multi-stage builds', or 'optimizes layer caching'. It's essentially just a name repeated with no elaboration of capabilities. | 1 / 3 |
Completeness | The 'what' is barely stated (just the name 'Dockerfile Generator') and there is no 'when' clause explaining when Claude should select this skill. The 'Triggers on' line just repeats the skill name and does not serve as meaningful trigger guidance. | 1 / 3 |
Trigger Term Quality | The only trigger term listed is 'dockerfile generator' repeated twice. It misses natural user phrases like 'Docker', 'container', 'Dockerfile', 'containerize', 'docker image', 'build image', or '.dockerfile'. | 1 / 3 |
Distinctiveness Conflict Risk | The term 'Dockerfile' does narrow the domain somewhat, making it unlikely to conflict with non-Docker skills. However, it could overlap with broader Docker or DevOps skills since it lacks specificity about what exactly it generates or when it should be preferred. | 2 / 3 |
Total | 5 / 12 Passed |
Implementation
0%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill is an empty shell with no substantive content. It consists entirely of boilerplate meta-descriptions about what the skill supposedly does without providing any actual Dockerfile generation guidance, examples, best practices, or executable code. It would be completely useless to Claude in generating Dockerfiles.
Suggestions
Add concrete, executable Dockerfile examples for common use cases (e.g., Python app, Node.js app, multi-stage build) with copy-paste ready code.
Include a clear workflow for Dockerfile generation: gather requirements → select base image → define build steps → optimize layers → validate with `docker build`.
Add specific best practices as actionable rules (e.g., 'Use multi-stage builds to reduce image size', 'Pin base image versions', 'Order COPY commands from least to most frequently changed for layer caching').
Remove all boilerplate sections (Purpose, When to Use, Example Triggers, Capabilities) and replace with actual instructional content that teaches Claude how to generate quality Dockerfiles.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is entirely filler and boilerplate. It explains nothing Claude doesn't already know, contains no actual Dockerfile knowledge, and wastes tokens on generic meta-descriptions like 'Provides step-by-step guidance' without providing any. | 1 / 3 |
Actionability | There is zero actionable content—no Dockerfile examples, no commands, no concrete code, no specific patterns. Every section describes what the skill supposedly does rather than actually instructing Claude how to generate Dockerfiles. | 1 / 3 |
Workflow Clarity | No workflow is defined at all. There are no steps, no sequencing, no validation checkpoints. The skill claims to provide 'step-by-step guidance' but contains none. | 1 / 3 |
Progressive Disclosure | The content is a monolithic block of generic text with no references to supporting files, no structured navigation, and no separation of concerns. There are no bundle files to reference either, but the content itself doesn't even organize its (absent) information well. | 1 / 3 |
Total | 4 / 12 Passed |
Validation
81%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 9 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
allowed_tools_field | 'allowed-tools' contains unusual tool name(s) | Warning |
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 9 / 11 Passed | |
- Commit
13d35b8
- Reviewed
Table of Contents
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