Rule apt-get-update_require_install should handle apt-get source or build-dep

[Oumph]

There is more than one way to install package with apt/apt-get. I think the following code should not trigger the update_require_install rule, even if it's a different kind of "install" (source package or build dependencies packages):

RUN apt-get update \
  && apt-get build-dep --assume-yes --no-install-recommends libonig \
  && apt-get source libonig=6.9.8-1
  && cd libonig-6.9.8 \
  && dpkg-buildpackage -us -uc -nc \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/*

Current status:

Line 2: RUN apt-get update \
Issue  Category      Title                 Description
    1  Optimization  apt-get update        All instances of `apt-get update` should have the `apt-get install`
                     without matching      commands on the same line to reduce image size.
                     apt-get install