Greetings, I am following along the dedicated server utils readme but got stuck with the mod install via steamcmd step. All mods from my install.txt and enabled.json get installed except calamity mod music which appears to time out or deny me permission (this is all the steam workshop logs say).
Solution
If anyone's reading from the future, this is a known bug in steamcmd (https://github.com/ValveSoftware/steam-for-linux/issues/6321), however it appears Valve isn't interesting in fixing. I worked around it by copying the CalamityModMusic.tmod file to the server's local mods folder, then everything else worked. I have no idea why a ~200MB file download is causing steamcmd to timeout on a reasonably fast server.