[Bug]: Euro Truck Simulator 2 Server not starting.

### User story

As a user I am hitting a problem when trying to start my ets 2 server, it does not start.

### Game

Euro Truck Simulator 2

### Linux distro

Ubuntu 22.04

### Command

command: start

### Further information

It's very simple, when i do ./ets2server start, it says that i started Ok but when i do again ./ets2server details, it says that it is stopped.

### Relevant log output

```shell
ets2server@vmi1340024:/home/SERVER$ ./ets2server start
[ .... ] Starting ets2server: /home/SERVER/lgsm/modules/check_system_requirements.sh: line 66: [: 0.5: integer expression expected
[ OK ] Starting ets2server: LinuxGSM
```

### Steps to reproduce

Just do a normal installation an you'll see.