[Feature Request] Remove extra spaces/Add missing spaces

[Samuel-Therrien-Beslogic]

These line:

RUN rm     -rf /usr/share/nginx/html/*
ENTRYPOINT ["nginx",     "-g" ,"daemon off;" ]

Would be formatted to this:

RUN rm -rf /usr/share/nginx/html/*
ENTRYPOINT ["nginx", "-g", "daemon off;"]

[scop]

Not quite there yet but some progress -- as of plugin version 0.3.3, result for the example is

RUN rm     -rf /usr/share/nginx/html/*
ENTRYPOINT ["nginx", "-g", "daemon off;"]