Docker zigbee2mqtt - Help needed

  1. Ok, so a “bare metal installation” means doing the the steps from the docs manually? I’m a little confused by that explanation.

The hole thing is only about testing flashed new device you because of this thread:

  1. So if I would install docker on a pi, where would I find the configuration.

  2. Is it save to start up the sticks in my own zigbee network. Or could this mess up my network. Does starting it up with by network store security sensitive data (like the network key) to the stick?
    If yes, if I reflash the stick this sensitive data would be 100% gone, right?
    I could flash, test, reflash. Or maybe flashing and testing is already save enough.
    I hope you can tell me.

As you told me before, I also thing being able to flash a device proofs that it works, but starting it up one time, would maybe be better.