borgmatic repo-create --encryption repokeyborgmatic key exportNote : This can also be done this way :
BORG_PASSPHRASE_NAME=<passphrase_name> STORAGE_BOX_USER=<user> SSH_KEY_NAME=<name> python3 start.py create_repoBORG_PASSPHRASE_NAME=<passphrase_name> STORAGE_BOX_USER=<user> SSH_KEY_NAME=<name> python3 start.py export_key