How do I integrate Dockadvisor into my CI/CD pipeline?

Install it via 'go install' and run as a CLI tool in pipeline steps; you can set score thresholds to fail builds based on Dockerfile quality, as shown in the usage examples.

Dockadvisor vs Hadolint: which is better for Dockerfile linting?

Dockadvisor is faster with Go and WebAssembly support, while Hadolint is more mature with a larger rule set. Choose Dockadvisor for lightweight Go integration, or Hadolint for extensive community-driven rules.

Can Dockadvisor detect security vulnerabilities in Dockerfiles?

Yes, it checks for potential secrets in variables and validates ARG scoping, but it focuses on syntax and best practices, not deep image scanning or runtime vulnerabilities.

How to use the WebAssembly version in a web app?

Build it with 'make build-wasm' and integrate using JavaScript, as demonstrated in the README, to enable Dockerfile linting directly in the browser.

Does Dockadvisor support Docker Compose files?

No, it only validates Dockerfiles; for Compose files, you'd need complementary tools like docker-compose config or other linters.

Is there a way to customize the linting rules in Dockadvisor?

The README doesn't mention custom rule creation; it relies on predefined rules, so for tailored checks, you might need to fork the project or use a more extensible linter.

Dockadvisor

Apache-2.0Go

A fast, lightweight Dockerfile linter written in Go that detects issues, enforces best practices, and provides quality scores.

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What is Dockadvisor?

Dockadvisor is a fast, lightweight Dockerfile linter written in Go that helps developers write better container images. It detects common issues, anti-patterns, and security vulnerabilities in Dockerfiles by validating them against 60+ best practice rules. The tool provides instant feedback with quality scores and actionable recommendations to improve Dockerfile quality.

Target Audience

Developers, DevOps engineers, and platform teams who build and maintain Docker images and want to ensure their Dockerfiles follow best practices and security guidelines.

Value Proposition

Developers choose Dockadvisor for its speed, comprehensive rule coverage, and clear feedback. Its lightweight Go implementation, WebAssembly support for browser usage, and quality scoring system provide a practical alternative to heavier linters while covering all standard Dockerfile instructions and security checks.

Overview

Lightweight Dockerfile linter that helps you write better Dockerfiles. Get instant feedback with quality scores, security checks, and 60+ best practice rules.

Use Cases

Best For

Enforcing Dockerfile best practices in CI/CD pipelines

Related Projects

Community-curated · Updated weekly · 100% open source

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212 stars7 forks0 contributors

Detecting security vulnerabilities and secrets in Docker builds

Improving multi-stage Dockerfile structure and efficiency

Getting instant feedback on Dockerfile syntax and style issues

Tracking Dockerfile quality improvements over time with scoring

Validating Dockerfiles directly in the browser via WebAssembly

Not Ideal For

Projects requiring real-time, in-editor linting without browser execution
Teams already integrated with Hadolint or dockerfilelint for Dockerfile validation
Environments using experimental or vendor-specific Dockerfile extensions beyond standard instructions

Pros & Cons

Pros

Lightweight Go Performance

Built with Go for optimal speed and efficiency, making it ideal for CI/CD pipelines, as highlighted in the features section.

Comprehensive Rule Coverage

Validates 60+ rules across all standard Dockerfile instructions, multi-stage builds, and security checks like secrets detection and ARG scoping.

Actionable Feedback with Scoring

Provides clear error messages with line numbers, severity levels, and a 0-100 quality score to help track and improve Dockerfile quality over time.

Multi-Platform Flexibility

Available as CLI, Go library, and WebAssembly module, allowing usage from command line to browser-based tools.

Cons

Limited Extensibility

The README doesn't mention support for custom rules or plugins, which may restrict adaptability to specific project needs.

Simplistic Scoring Model

Uses fixed penalties (-15 for errors, -5 for warnings) that may not accurately reflect issue severity or allow for nuanced quality assessment.

Basic Web Interface Setup

Requires Docker Compose to run the web interface, which adds complexity and isn't as feature-rich as dedicated GUI linters.

Open Source Alternative To

Dockadvisor is an open-source alternative to the following products:

h

hadolint

Hadolint is a Dockerfile linter that validates Dockerfiles against best practices and common errors, helping to write better Docker images.

dockerfilelint

dockerfilelint is a linter for Dockerfiles that checks for best practices, syntax errors, and potential issues to ensure Dockerfile quality and security.

Frequently Asked Questions

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Dockerfile Linter is a tool that analyzes Dockerfiles to ensure they follow established best practices for creating efficient and secure Docker images. It helps developers catch common mistakes and optimize their Docker builds by validating syntax and providing actionable feedback. ## Key Features - **Rule-Based Validation** — Implements over 40 specific rules covering directives, instructions, and common anti-patterns. - **ShellCheck Integration** — Uses ShellCheck to analyze shell code within RUN instructions for additional safety. - **Flexible Ignore System** — Supports ignoring rules via inline comments, YAML configuration files, or CLI flags. - **CI/CD Ready** — Designed for integration into continuous integration and delivery pipelines with configurable error levels. - **Multiple Interfaces** — Can be used via CLI, Docker container, or natively within the Buddy CI/CD platform. ## Philosophy The linter emphasizes practical, actionable feedback to help developers build better Docker images by following documented best practices and avoiding common pitfalls.

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