Added clarification about /captain for developing on Mac OS catalina or above

Author: nileshtrivedi

CONTRIBUTING.md

@@ -27,8 +27,9 @@ The goal is to make the common use-cases exposed via simple controls on UI while
 First, you need a Captain instance running in debug mode, this can be a remote server, a VM on your local machine,
 or your local machine itself. Needless to say, Docker is required (same minimum version as mentioned in README). Ubuntu is the best dev environment for CapRover.
 
-> Docker for Mac users: You need to add `/captain` to shared paths.  
+> Docker for Mac users: You need to add `/captain` to shared paths.   
 > To do so, click on the Docker icon -> Preferences -> File Sharing and add `/captain`
+> This is not possible in Catalina or above versions. You can try your luck by changing `CAPTAIN_BASE_DIRECTORY` in `src/utils/CaptainConstants.ts` and in `dev-scripts/dev-clean-run-as-dev.sh` but it might be best to develop in a linux VM for best results.
 
 Log in to your machine, clone the git repo and run the following lines: