36e9db4fb7
A toolbox created by the script can be used as the base of a pet container that is manually updated with new dependencies over time and accumalates additional packages; or it can be used as a deposable container that is recreated each time the dependencies change. To make the latter case more convenient, add a --replace option that deletes an existing toolbox before creating the new one. Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2713>