adding some code

sys0-code/config/config_install.php

@@ -0,0 +1,12 @@
+<?php
+$DB_SERVER='sys0-db';
+$DB_USERNAME='root';
+$DB_PASSWORD='1234';
+$DB_DATABASE='sys0_db';
+/* Attempt to connect to MySQL database */
+$conn = new mysqli($DB_SERVER, $DB_USERNAME, $DB_PASSWORD);
+// Check connection
+if($conn === false){
+    die("ERROR: Could not connect. " . mysqli_connect_error());
+}
+?>