Build a multi-project setup



I used to have 2 different github projects, a Grails backend and an Angular 2 frontend, that I built separately, each with its own circle.yml configuration file. Now I merged those two projects under one parent project in Github so I’m trying to figure out how to build them in Circle CI. I saw in the doc that you can can a build_dir to the config but then you can put only one value in there I guess. How can I tell circle to build and run tests on each subproject independently.