Automated heroku deploy from subfolder

Question

I know you can deploy automatically to heroku from github, but I haven\'t found a way to only push a subfolder from github to heroku.

From the command-line I know it is

Answer 1

What I did in order to have automatic deployments from a subfolder was to create a new branch in GitHub and push JUST the subfolder and then set Heroku to auto-deploy to that branch.

Use git subtree push --prefix origin to push the subfolder into that branch