A Better SMP Server for Minecraft Java Edition
You can get the pack from here - https://www.curseforge.com/minecraft/modpacks/a-better-smp-server
Click into Files, then click into the file to see the serverpack and datapack files which you will also need.
Full instructions should be on the main page
- Initial release
- Datapack, Serverpack, Main pack all compiled ready for upload.