You can do it that way but you can easily just go into the BDS folder and apply the behavior pack yourself. Put the uncompressed files in development_behavior_packs which should be located at the root directory of your BDS folder. If it doesn't exist then make one. Get the UUID and version number from the manifest of that behavior pack then go to the worlds folder also located at the root of your BDS folder. Go inside the folder for your world then open a file called world_behavior_packs.json. If it doesn't exist then make one. Then using the following format apply the UUID and version for your behavior pack. Restart the BDS server and voila.
world_behavior_packs.json template
[
{
"pack_id": "6169f799-b119-409d-88ca-d9ebc8ef6379",
"version": [1, 0, 0]
}
]