== should format comment ==
#   Comment
RUN echo 'testing'

RUN echo hello \
#comment
 #also a comment
world

#comment

[expect]
# Comment
RUN echo 'testing'

RUN echo hello \
# comment
# also a comment
world

# comment

== should format empty comment ==
#

[expect]
#

== should handle leading whitespace before a comment ==
  # leading whitespace is a comment
  RUN test

[expect]
# leading whitespace is a comment
RUN test

== should get comments in env vars ==
ENV MY_NAME="John Doe" \
# testing
    MY_DOG=RexTheDog

[expect]
ENV MY_NAME="John Doe" \
    # testing
    MY_DOG=RexTheDog

== should handle multiple comment chars ==
## testing
###test
####  test
#####

[expect]
## testing
### test
#### test
#####