Onionshare not in stable. Pinning not possible to support upgrades thru apt. magic-wormhole is a great alternative to easily share data between two endpoints. It will require a uwt wrapper to support stream isolation.

https://forums.whonix.org/t/onionshare-alternatives/4877/11

https://forums.whonix.org/t/magic-wormhole-easyly-get-things-from-one-computer-to-another-safely-review/4026