bash script to start and stop a Windows Aliens vs. Predator (2010) dedicated server on Linux with wine

avpds.sh

#!/bin/bash
# Installation:
# Laden des Windows Binaries unter Linux
#./steamcmd.sh +login user pass +force_install_dir /home/steam/avpds +@sSteamCmdForcePlatformType windows +app_update 34120 +quit

DISPLAY=${DISPLAY:-:1}
WINEPREFIX=/home/steam/wine/avpds
#DISPLAY=localhost:10.0

. /lib/lsb/init-functions
case $1 in
	start)
		/sbin/start-stop-daemon --start --pidfile xvfb.pid --make-pidfile --exec /usr/bin/Xvfb --background -- :1

		DISPLAY=$DISPLAY WINEPREFIX=$WINEPREFIX /sbin/start-stop-daemon --start --pidfile avp.pid --make-pidfile --chdir $WINEPREFIX/drive_c/avpds --exec /usr/bin/wine --background -- 'C:\avpds\AvP_CLI.exe'
		;;
	stop)
		/sbin/start-stop-daemon --stop --quiet --retry=TERM/1/KILL/5 --pidfile avp.pid --name AvP_CLI.exe
		/sbin/start-stop-daemon --stop --quiet --retry=TERM/1/KILL/5 --pidfile xvfb.pid --name Xvfb
		;;
	status)
		status_of_proc -p xvfb.pid /usr/bin/Xvfb xvfb
		status_of_proc -p avp.pid /usr/bin/wine avpds
		;;
esac

I know this is almost 5 years old, but does this happen to be part of a larger guide? Specifically, Steam connection failure, EResult = 3 occurs and I'm unsure whether SteamCMD through Wine is supposed to authenticate the server app.