RoR2 Docker Container

Hi all, I've been trying to wrap my head around converting the docker container for a Risk of Rain 2 dedicated server to run within unraid docker system.

Using the one on docker hub at  https://hub.docker.com/r/avivace/ror2server it imports and converts fine as far as i can see, but I then run into issues when trying to setup and apply the mod folder?

The instructions want me to change the docker run to 

docker run -p 27015:27015/udp -v /path/to/directory:/home/steam/ror2ds-mods -e R2_ENABLE_MODS=1 avivace/ror2server:latest

so I've tried doing this by having the following under extra parameters - 

-e R2_ENABLE_MODS=1 avivace/ror2server:latest

and added an additional path variable as below -

When I update the config and then run the container the log files are showing -

/root/ror2-dedicated/entry.sh: line 30: /root/ror2-dedicated/Risk of Rain 2_Data/Config/server.cfg: No such file or directory
Setting up mods...
cp: cannot stat '/root/ror2ds-mods/BepInEx': No such file or directory
cp: cannot stat '/root/ror2ds-mods/doorstop_config.ini': No such file or directory
cp: cannot stat '/root/ror2ds-mods/winhttp.dll': No such file or directory

Can a docker wizard show me where i'm going wrong or what i'm not wrapping my head around