Not working on dokku

[tonyalaribe]

I tried using your buildpack on dokku, and it appears the build pack runs successfully. but i get this message. I'm out of ideas, as My application is a golang app that relies on libvips for image processing.

  # pkg-config --cflags vips vips vips vips
   Package vips was not found in the pkg-config search path.
   Perhaps you should add the directory containing `vips.pc'
   to the PKG_CONFIG_PATH environment variable
   No package 'vips' found