steps:
  - id: "Lint Dockerfile"
    name: "hadolint/hadolint:latest-alpine"  # https://hub.docker.com/r/hadolint/hadolint
    entrypoint: "/bin/sh"
    args:
      - -c
      - | # Recursively find dockerfiles (not in testing dir)
        find . -name "*Dockerfile" -not -path "./testing/*" \
          -exec hadolint {} \; \
          | tee /proc/1/fd/1 \
          | grep -q "Dockerfile"
        if [[ $? -eq 0 ]] ; then exit 1 ; fi
