Build the image locally with the selected Jellyfin version (see releases here)
$ docker build \
--ulimit nofile=1024:1024 \
--build-arg RELEASE_TAG="2023-06-07" \
--build-arg RELEASE_ASSET="Jellyfin.wgt" \
-t jellyfin-tizen:latest .
Enable developer mode on your TV and run the following command with the TVs address at the end (without angles <>).
$ docker run --rm -it \
--ulimit nofile=1024:1024 \
jellyfin-tizen:latest <tv.address.here>
No guarantees given, this was hacked together so as to make the process less of a chore for me.