The modrinth integration seems to only pick up plugins, but not mods.
Here's an docker-compose (ish):
image: itzg/minecraft-server:latest
tty: true
environment:
EULA: 'TRUE'
TYPE: PAPER
MODRINTH_PROJECTS: "easiervillagertrading"
MODRINTH_ALLOWED_VERSION_TYPE: "release"
Given this is a mod, but not a plugin, it seems to no-op and skip downloading/installing it.
Originally posted by @terafin in #1884 (comment)