Publish releases to GitHub, as there is no curseforge launcher for linux.

While GitHub releases would definitely be ideal, you could try using MultiMC at least for now: multimc.org
(although here's why you might want to give PolyMC a try instead)

There is also the FTB App. It will show all packs available from FTB as well as CurseForge.

Edit: I use this regularly on Pop OS as well as Arch.