Thanks for that.
I looked all through that and didn’t see that needle in the haystack.
I tried using the “-d path” method and wasn’t having any success.
Once I modified the install script it worked great.
In case anybody else wants to do this and finds this later, this is what I did:
go to the link for the installer script at:
https://github.com/home-assistant/hassio-installer/blob/cbae7bc68adcec26b2a1eafd8849d25c0354e2f5/hassio_install.sh
then click the “raw” button.
Copy all of the info there and paste into a text file.
Modify the following line (line 68 at the time of this writing) to the path where you want to install the config files:
DATA_SHARE=${DATA_SHARE:-/home/pi/docker/hassio}
Then save that text file wherever you find convenient as whatever file name you want with the file extension".sh". I saved mine as install-hassio.sh.
Then you need to make that file executable:
chmod +x /path/<filename>.sh
Perform the rest of previous steps at:
https://www.home-assistant.io/hassio/installation/#arch-linux
but after you run “sudo -i” change to the directory where you stored the modified install script:
cd /path/to/file
then run the file (for installing on a RPi3):
./install-hassio.sh -m raspberrypi3
you will see a few lines of code executing.
The modifications above will force the install of the configuration files to the /home/pi/docker/hassio directory and you will end up with the following directory structure there:

The config files will be stored in the “homeassistant” directory.
Navigate to the IP of your machine port:8123 and complete the initial configuration.