failing to boot brand new image

[eedori]

On first boot I am presented with the following...

svencoop-server | SteamCMD not found!
svencoop-server | /serverdata/steamcmd/steamcmd_linux.tar.gz: Permission denied
svencoop-server | tar (child): /serverdata/steamcmd/steamcmd_linux.tar.gz: Cannot open: No such file or directory
svencoop-server | tar (child): Error is not recoverable: exiting now
svencoop-server | tar: Child returned status 2
svencoop-server | tar: Error is not recoverable: exiting now
svencoop-server | rm: cannot remove '/serverdata/steamcmd/steamcmd_linux.tar.gz': No such file or directory
svencoop-server | ---Update SteamCMD---
svencoop-server | /opt/scripts/start-server.sh: line 12: /serverdata/steamcmd/steamcmd.sh: No such file or directory
svencoop-server | ---Update Server---
svencoop-server | ---Validating installation---
svencoop-server | /opt/scripts/start-server.sh: line 25: /serverdata/steamcmd/steamcmd.sh: No such file or directory
svencoop-server | ---Server ready---
svencoop-server | ---Start Server---
svencoop-server | /opt/scripts/start-server.sh: line 69: /serverdata/serverfiles/svends_run: No such file or directory

I booted the image with the following docker-compose:
version: '3.3'
services:
svencoop-server:
container_name: svencoop-server
ports:
- '3075:3075'
- '3075:3075/udp'
environment:
- GAME_PORT=3075
- 'GAME_PARAMS=+maxplayers 12 +map osprey +log on -num_edicts 8192'
- VALIDATE=true
- UID=99
- GID=100
volumes:
- './steamcmd:/serverdata/steamcmd'
- './serverfiles:/serverdata/serverfiles'
image: 'skylord123/svencoop-server:latest'

[ComputersWithTimo]

Hi sorry for the late reponse.

Since you are forwarding /serverdata/steamcmd please check that you have set the correct permission on the file system.
The same thing for /serverdata/serverfiles

This container creates a different user with another uid and gid.