Hi folks. Probably the same question has been asked several times and I really did my best to find any existing solution the last days. But either the information is outdated or vaguely described so that I am not able to use them as a solution.
I am not a Linux or Docker expert. Actually I am very far away from everything which is going beyond ssh, list files/folders, open files and very basic stuff like this.
I am running HA OS on a Raspberry PI 3 with everything on the latest version. HA OS is 9.4 and Core is 2022.12.5
I installed Influx and Grafana from the addon store and everything is running fine and smoothly. I don’t have external network access which is fine for me and allows me to lower security standards.
Now I wanted to add my Grafana dashboard to a lovelace card in a panel. But Grafana does not allow this out of the box for security reasons. I wanted to change the Grafana config to make this possible. And now my problems start. 
It seems as if I just can’t reach the configuration of Grafana. SSH seems to block it. I don’t know how to setup env variables for Grafana which would allow my to circumvent the config file. And you see, I am a bit lost.
I did find several hints which are years old and seem to be outdated. Can someone give me assistance please?
Thank you in advance!