hadolint

name	hadolint
description	Use this skill when the user wants to lint Dockerfiles, check Dockerfile best practices, or validate container build instructions.

hadolint Plugin

Dockerfile linter with inline-comment ignore support.

Commands

Lint

• hadolint lint run — Lint a Dockerfile
• hadolint lint json — Lint and output JSON

Usage Examples

• "Check my Dockerfile for issues"
• "Lint the Dockerfile in this directory"
• "Validate best practices in my Dockerfile"

Installation

brew install hadolint

Examples

# Lint Dockerfile
hadolint Dockerfile

# JSON output
hadolint --format json Dockerfile

# Ignore rules
hadolint --ignore DL3003 Dockerfile

# Specify config
hadolint --config .hadolint.yaml Dockerfile