rules:
  - id: prefer-json-notation
    severity: INFO
    languages: [dockerfile]
    message: >-
      Prefer JSON notation when using CMD or ENTRYPOINT. This allows signals to be passed
      from the OS.
    metadata:
      source-rule-url: https://github.com/hadolint/hadolint/wiki/DL3025
      references:
        - https://github.com/hadolint/hadolint/wiki/DL3025
        - https://docs.docker.com/develop/develop-images/dockerfile_best-practices/#cmd
      category: best-practice
      technology:
        - dockerfile
    pattern-either:
      - patterns:
          - pattern: CMD $WORD ...
          - pattern-not-inside: CMD [...]
      - patterns:
          - pattern: ENTRYPOINT $WORD ...
          - pattern-not-inside: ENTRYPOINT [...]