hadolint

Dockerfile linter. More information: https://github.com/hadolint/hadolint.

• Lint a Dockerfile:

hadolint path/to/Dockerfile

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

hadolint --format json path/to/Dockerfile

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

hadolint --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 ...