Adding a custom mod but it doesn't work

[cyo57]

I don't know where the operation went wrong.

I have already added the environment variables on line 12.

debian@minecraft-server:~/stardew-multiplayer-docker$ head -n 15 docker-compose.yml | cat -n
     1  version: '2.2'
     2
     3  services:
     4    valley:
     5      build: docker
     6      container_name: stardew
     7      environment:
     8        - "VNC_PASSWORD=nyanyanya"
     9        - "DISPLAY_HEIGHT=900"
    10        - "DISPLAY_WIDTH=1200"
    11        ## MOD Config
    12        - ENABLE_GENERICMODCONFIGMENU_MOD=true
    13        ## Always On Server mod
    14        # Removing this will probably defeat the point of ever using this?
    15        - ENABLE_ALWAYSONSERVER_MOD=${ENABLE_ALWAYSONSERVER_MOD-true}
debian@minecraft-server:~/stardew-multiplayer-docker$ 

debian@minecraft-server:~/stardew-multiplayer-docker$ ls -ahl docker/mods/
total 52K
drwxr-xr-x 13 debian debian 4.0K May 31 09:29  .
drwxr-xr-x  4 debian debian 4.0K May 31 10:05  ..
drwxr-xr-x  2 debian debian 4.0K May 31 09:33 'Always On Server'
drwxr-xr-x  2 debian debian 4.0K May 31 08:12  AutoLoadGame
drwxr-xr-x  2 debian debian 4.0K May 31 08:12  ChatCommands
drwxr-xr-x  2 debian debian 4.0K May 31 08:12  CropsAnytimeAnywhere
drwxr-xr-x  2 debian debian 4.0K May 31 08:12  FriendsForever
drwxr-xr-x  4 debian debian 4.0K May 31 09:29  GenericModConfigMenu
drwxr-xr-x  2 debian debian 4.0K May 31 08:12  NoFenceDecay
drwxr-xr-x  2 debian debian 4.0K May 31 08:12  NonDestructiveNPCs
drwxr-xr-x  2 debian debian 4.0K May 31 08:12  RemoteControl
drwxr-xr-x  2 debian debian 4.0K May 31 08:12  TimeSpeed
drwxr-xr-x  2 debian debian 4.0K May 31 08:12  UnlimitedPlayers

After executing docker-compose build --no-cache, the GenericModConfigMenu Mod still does not load upon rerun.