Need some help getting a server with a custom modded .jar file not showing up in the web ui

I’ve been wanting to play some modded beta 1.7.3 online with friends a while now, especially the Better Than Adventure mod on my unraid server. I got the mineos-node by hexparrot on my docker and it seems to be set up right. I have everything configured so I can add in and edit the files, but no matter where I put the server .jar download from the link above and no matter what I name it I can’t seem to get the dropdown menu to recognize it and I can’t select it. Can anyone point me to a guide or walk me through this? I’m super lost and I’ve had other problems with all of the other alternatives too.

it seems like it’s forcing me to use the profile system and it’s very strict about what files within those profiles it’ll let me use. Idk if the beta versions just arent supported on what I have.