It didn't ask for the key package-signing-key file or the key
fingerprint.?? Did it use them silently somehow, or were they unneeded?
Add `localpkg_gpgcheck=1` to `/etc/dnf/dnf.conf`
https://dnf.readthedocs.io/en/latest/conf_ref.html#localpkg-gpgcheck-label
Many, including myself, feel this should be the default.
Then, when you wish to install a local package without checking the gpg key, add the
`--nogpgcheck` option to your dnf command.
List installed rpm keys:
rpm -q gpg-pubkey --qf '%{name}-%{version}-%{release} %{summary}\n'
To import the Zoom gpg key into your rpm database:
sudo rpm --import
https://zoom.us/linux/download/pubkey
Robin