Gulp: how to not convert marked files when copying to production assembly?

Question

gulp.js

Good afternoon!

The task is as follows:
There is an image that, as it seems to me, does not require optimization . on the contrary, I would improve the quality of this picture. And of course, I can do everything by hand, put the image in dist, removing it from src. But I want to automate such cases. For example, by adding some prefix to the file name , which will go to the assembly without transformations .

I know that you can make exceptions (!), gulp will see this line and the path to the template files, and will ignore these files. But I still want to copy them, and not completely eliminate them.. Running a separate construction to copy such files is probably not entirely correct. Somewhat primitive.

Is there any galp module that solves all this? Or how do you deal with such a task ?