---
syntax: markdown
tags: [tldr, common]
source: https://github.com/tldr-pages/tldr.git
---
# hadolint

> Dockerfile linter.
> More information: <https://github.com/hadolint/hadolint#cli>.

- Lint a Dockerfile:

`hadolint {{path/to/Dockerfile}}`

- Lint a Dockerfile, displaying the output in JSON format:

`hadolint {{[-f|--format]}} {{json}} {{path/to/Dockerfile}}`

- Lint a Dockerfile, displaying the output in a specific format:

`hadolint {{[-f|--format]}} {{tty|json|checkstyle|codeclimate|codacy}} {{path/to/Dockerfile}}`

- Lint a Dockerfile ignoring specific rules:

`hadolint --ignore {{DL3006}} --ignore {{DL3008}} {{path/to/Dockerfile}}`

- Lint multiple Dockerfiles using specific trusted registries:

`hadolint --trusted-registry {{docker.io}} --trusted-registry {{example.com}}:{{5000}} {{path/to/Dockerfile1 path/to/Dockerfile2 ...}}`
