Need some help with my config.yaml: map misbehaves and environment needs some example for me to unde | Home Assistant | Page 1

Hey guys,
I try to get this into a addon: https://github.com/txitxo0/googlefindmytools-homeassistant
So far I managed to get some basic install working, but I fail badly with mapping a folder from outside into the internal /app/auth. It does not care about my path I add to it: https://github.com/dreimer1986/googlefindmytools-homeassistant/blob/main/config.yaml
In this case it still is mounting the data into the /config folder...
And while we are at it... can someone provide me a example for the "environment" dict in a way that I can set the environment variables from outside in the config page? I have zero clue how this should look like at all...

#Need some help with my config.yaml: map misbehaves and environment needs some example for me to unde