Rust: environment.sh: Couldn't find Steam root directory

[d3adwolf]

Cannot start the server when using Carbon.

rustserver@rust:~$ docker exec -it --user linuxgsm rustserver ./rustserver st
[ INFO ] Starting rustserver: Running Carbon environment.sh
[  OK  ] Updating rustserver: Checking for update: SteamCMD

Update available
* Local build: 14649231
* Remote build: 
* Branch: public
https://steamdb.info/app/258550/

[ START ] Updating rustserver: SteamCMD
Branch: public
/data/.local/share/Steam/steamcmd
/app
steamcmd.sh[9305]: Couldn't find Steam root directory from /data/.local/share/Steam/steamcmd/steamcmd.sh, aborting!
Complete! Updating rustserver: SteamCMD