When building inside of the Docker container, some files with
generated HTML are being validated by RAT and failing due to the
lack of a license header. When building outside of Docker, this
problem does not occur. Not sure why these paths don't fail when
building outside of the container, and I don't know enough about
the plugin that generates these files to understand why it behaves
differently inside of the container. Nonetheless, I think these
excludes seem reasonable.
