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 ...}}