Dockerfile Linter action
GPL-3.0JavaScript
A Node.js-based Dockerfile linter that checks syntax and enforces best practices for building efficient Docker images.
46 stars3 forks0 contributors
Overview
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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Community-curated · Updated weekly · 100% open source
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