Environment Here are some environment variables needed that are available to be used in app install scripts:
* HDA_APP_DIR: Directory of the webapp (basically, PWD)
* HDA_IP: the internal IP of the HDA
* HDA_APP_NAME: App name
* HDA_APP_PASSWORD: admin password (if available, otherwise undefined)
* HDA_1ST_ADMIN: username of the 1st admin user
== Examples ==
* Suppose the app needs to initialize the DB for an app with an initial admin user and password. The script could use <code>echo "insert .... '$HDA_APP_USERNAME' ..." </code>
* Same thing with the domain name for this HDA.
* Suppose there is a need to crete a directory for storing some file with a user name. The app install script could do <code>mkdir -p $HDA_1ST_ADMIN" </code>