Modpack version
0.4.10

Describe the bug
When attempting to start up the server using the docker container on init I receive the following error repeating in the logs

Please make sure you are using the server version of the FTB modpack!

Steps taken to run the server:
Download the server from forge, run the server on my local machine, copy configs defaultconfigs kubejs libraries mods and patchouli_books to the zip file
Copy the zip file to the directory on the server
Start the container

Docker-compose file:

version: '2'

# Repository for the image below: https://github.com/itzg/docker-minecraft-server

services:
    minecraft:
        image: itzg/minecraft-server:java8
        volumes:
            #  Uses the modpacks folder in the same folder as the docker-compose.yml for the server files to install
            - /mnt/cache/minecraft/modpacks/:/modpacks:ro
            #  Uses the data folder in the same folder as the docker-compose.yml for config, mods, world etc
            - /mnt/cache/minecraft/data:/data
        environment:
            EULA: 'true'
            TYPE: CURSEFORGE
            # The modpack zip you've downloaded from https://www.curseforge.com/minecraft/modpacks/enigmatica6/files
            CF_SERVER_MOD: /modpacks/Enigmatica6-0.4.10.zip
            # Default RAM allocation
            MEMORY: 8G
            OPS: taubin
        ports:
            - 25565:25565
        restart: unless-stopped

Logs
https://gist.github.com/Taubin/39a37598d234b0d2ee9d7f14c09c46ae

Screenshots
N/A

I'm not sure if this is an issue with the itzg server (which was updated 1 day ago apparently) or the server files I'm copying over. I apologize if this is just me being dumb but I believe I've done everything correctly.

It seems you modified the modpack volume but not the path that the image looks for modpacks.
CF_SERVER_MOD: /modpacks/Enigmatica6-0.4.10.zip should probably be CF_SERVER_MOD: /mnt/cache/minecraft/modpacks/Enigmatica6-0.4.10.zip

Yep I'm an idiot, sorry. Thanks for that.

No worries 😄

We use the issue tracker exclusively for bug reports, development and feature requests. However, this issue appears to be a support request. Please use the support channel on our Discord to get help.

Actually I wanted to reopen this it does seem to be a bug unless I'm missing something very major. The downloads for the current version (.4.10) are tiny compared to the previous (.4.8) 5KB vs 322MB. The server package is missing nearly everything.

Running the server on my windows machine first, then copying over all the files back into the zip still misses the settings.cfg file which seems to be needed in order to actually start the server as it's not created. Copying it over from the previous version will allow the server to start, however it doesn't match when attempting to log into the server so it is closed immediately as it rejects the client difference.

The zip is in the correct location and being unzipped, however all of the mod files etc are missing from the zip when downloaded from forge (as it's a 5kb file). https://www.curseforge.com/minecraft/modpacks/enigmatica6/files/3295285

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Running the server on my windows machine first

How did you run the server?
The server files contains a script that downloads all the things it needs. That's what you need to run :)