In the `boot` drive, create two files:

ssh

userconf.txt

pi:$6$/XOZsG1X0IAbhXB0$wYZHRkvib0SUKQA3KVAxofPR.JsFAbI2NCue2znGvhRsQobVdllFXyQZ7fMSvAoyEj8MfHtkMeSZT7IRIixg01