Copy pasted vulcan build from Labgoo: https://bitbucket.org/labgoo/heroku-buildpack-nodejs-with-opencv
Also copy pasted from @rumblelabs: https://github.com/rumblelabs/heroku-buildpack-cairo
Should at least work with heroku-buildpack-nodejs
+ the after_compile
fork of heroku-buildpack-multi
by salsify:
https://github.com/salsify/heroku-buildpack-multi
Have fun!