Here i'll explain how to enable/configure Steam Workshop integration of Day of Infamy Dedicated Server.

Steam Workshop should be working for both Windows and Linux Dedicated server as well.

First add this parameter to the startup file (command line)

This will enable workshop support for server.

Now tell the server which files should be downloaded.
Navigate to:

create a TXT file and rename it to:

In case you want to use your own custom modification or map, you need to upload it on Steam Workshop through the game client first.

Then navigate through the Steam Workshop:
https://steamhost.cn/steamcommunity_com/workshop/browse?appid=447820

and find a mod that you want to have on your server. Locate its ID number, it is written in the HTTP link of the mod, example:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=823752012

So the example mod ID is "823752012"

Copy that ID number to the "subscribed_file_ids.txt" file you have just created. Multiple ID’s can be placed, just be sure it is one ID per line.

Start the server and it will attempt to download all the Workshop mods (might take a while if you have lots of mods).

Attention !
It is necessary to add mod ID number to "subscribed_file_ids.txt" file, otherwise clients won’t recognize the mod and will be disconnected.

Server-side folder structure:

Client-side folder structure:

This directory contains both VPK mods and custom maps. Each folder under this directory correlates with the Workshop modID.

Mapcycle file structure for New maps is same as for the official ones:

If you have VPK mod containing Theater script or Playlist, you will use normal methods for getting them to work: "mp_theater_override" and "sv_playlist" respectively.

Steam Workshop Collection work a bit differently than in other Source engine games. You can mix workshop IDs with file IDs if you want.

Be sure that your server have Workshop enabled (see Step 1) then copy "Collection ID", put it in "subscribed_file_ids.txt", restart the server and it will download all content from the collection.

As you may or may not know, Server Side Workshop does support modifications that requires other mods to work properly. These are linked via “required item” function in Steam Workshop page of such mod.

Only main mod ID is needed to subscribe server side, any required item will be then downloaded/mounted automatically and will be correctly pushed for clients. Yes, it is that easy !