A barebone minecraft: bedrock edition server software
Barebone is not a "Plug and play" Serversoftware. On its own, its useless.
All it does on its own is joining and spawning. Everything else has to be implemented by a developer.
This is alot of work, but in return, you'll get a serversoftware that just does what you need.
For the best Minecraft: Bedrock Edition experience, we recommend PowerNukkitX.