Combining external images with vignettes to make pkgdown article

[jeffwong-nflx]

There is a similar, closed issue here: #1027 which I feel is incomplete.

I have a package with a vignettes folder. Inside that folder is another folder called images. In the .Rmd I use knitr::include_graphics(<full path to image file>) in an Rmd chunk to display the image.
When I knit the vignette, the images render. However, if I use pkgdown the resulting article does not render the images.

I believe this is because the docs directory created by pkgdown needs to copy the images from vignettes/images/. I can see that the article's .html source file is trying to reference an image located in images/<my_image.jpg>, but there is no such directory called images inside docs. How can I trigger pkgdown to do a copy based on <full path to image files> ?

[hadley]

See details at https://pkgdown.r-lib.org/reference/build_articles.html#external-files