When sharing a service account key with CMP, currently it only supports upload a key file.
However if a user employs cloudshell they don't get a local key file on their machine and would prefer to copy/paste key contents into the CMP dialog box - but there is not such options. So they end up opening a local editor, paste the contents, save the file locally and then upload (and most certainly forget to delete the file)
It will be great if we could not only upload a key file but copy/paste it as well.