How to pass environment variables?

One could use `/etc/sysconfig/netbird` file in Linux to pass environment variables to netbird like the following:
```bash
berkant@netbird1:~$ cat /etc/sysconfig/netbird
NB_ICE_DISCONNECTED_TIMEOUT_SEC=25
NB_ICE_FAILED_TIMEOUT_SEC=25
NB_ICE_FORCE_RELAY_CONN=false
NB_LOG_LEVEL=trace
```

How does one do the same to pass those to Go process in Android?