fix(ts3): update now works in docker

lgsm/modules/update_ts3.sh

@@ -18,7 +18,7 @@ fn_update_localbuild() {
 	# Gets local build info.
 	fn_print_dots "Checking local build: ${remotelocation}"
 	# Uses log file to get local build.
-	localbuild=$(grep -Eo "TeamSpeak 3 Server ((\.)?[0-9]{1,3}){1,3}\.[0-9]{1,3}" "$(find ./* -name "ts3server*_0.log" 2> /dev/null | sort | tail -1)" | grep -Eo "((\.)?[0-9]{1,3}){1,3}\.[0-9]{1,3}" | tail -1)
+	localbuild=$(grep -Eo "TeamSpeak 3 Server ((\.)?[0-9]{1,3}){1,3}\.[0-9]{1,3}" "$(find "${serverfiles}"/* -name "ts3server*_0.log" 2> /dev/null | sort | tail -1)" | grep -Eo "((\.)?[0-9]{1,3}){1,3}\.[0-9]{1,3}" | tail -1)
 	if [ -z "${localbuild}" ]; then
 		fn_print_error "Checking local build: ${remotelocation}: missing local build info"
 		fn_script_log_error "Missing local build info"