false positive: Arguments to CMD in exec for must not contain single quotes

[russelltsherman]

Issue details

dockerlint reports false positive when CMD includes whitespace between brackets and quotes.

Steps to reproduce/test case

add spaces between brackets and quotes triggers this lint error
CMD [ "node" ]

Affected version(s)

0.2.0

[cstrouse]

This also occurs without spaces between the bracket and the quotes. Seems to me that the issue is triggered whenever there is a space character anywhere within the brackets.

CMD ["awesome_bot", "README.md", "--allow-dupe", "--allow-redirect", "--allow-ssl", "--allow-timeout", "--allow 999,403,405,500"]

[odivlad]

I also have false-positive because of comma symbol in argument, that I should pass to exec:

CMD ["my-executable", "-b", "a,1"]

I see, that it occurs because of split by comma, but I don't know how to fix it correctly...
https://github.com/RedCoolBeans/dockerlint/blame/master/src/checks.coffee#L84