This script can write the image, mount it for modifications (like setting up wifi and key-based SSH logins including key generation) and clean up after itself.
You can either edit the script itself or create a configuration file. See conf-example for reference.
The default location for a configuration file is $HOME/.config/raspi. You can also give a configuration file as an argument; this is sourced before any execution takes place and can thus override literally everything. Try running the script without arguments and with conf-example as an argument to see the difference. No destructive action is taken without prompting.