Spigot jarfile not recognized [SOLVED]

[radioaddition]

when using spigot (i used 1.12.2, I didn't test other versions) it doesn't recognize the jarfile and either uses paper or downloads it if I've deleted it

what I did:

1. Go to https://getbukkit.org/get/Fpt2yFn7HRTrot5uE1b8NFWtpQlYITgK
2. download file
3. put in serverfiles
4. start server

Should start server using the spigot jarfile I provided

• OS: balenaOS 2.83.10+rev1

• Supervisor version 12.9.3

• Device: Macbook Air

• OS: MacOSX 11.5.2

• Minecraft Edition: Java Edition

• Minecraft Version: 1.12.2

[radioaddition]

found a solution. add a variable called "JAR_FILE" (no quotes) and set the value to the name of the jarfile you want to run the server with. for me it still downloaded the latest version of paper but it used the one i wanted it to so I'm not gonna complain