== should normalize options and the nested command ==
HEALTHCHECK   --interval=30s    --timeout=3s   CMD   curl -f http://localhost/
HEALTHCHECK --retries=3 CMD ["curl","-f","http://localhost/"]

[expect]
HEALTHCHECK --interval=30s --timeout=3s CMD curl -f http://localhost/
HEALTHCHECK --retries=3 CMD ["curl", "-f", "http://localhost/"]

== should support flags with dashes ==
HEALTHCHECK  --start-period=5s  CMD  test

[expect]
HEALTHCHECK --start-period=5s CMD test

== should format NONE ==
HEALTHCHECK    NONE

[expect]
HEALTHCHECK NONE
