fix: add missing db init script

mariadb-init.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Wait for the database server to start
+# (Adjust the waiting logic as per your requirement)
+sleep 10
+
+# Granting privileges to cloud_user (adjust as necessary)
+mysql -u root -p"${MYSQL_ROOT_PASSWORD}" -e "
+GRANT ALL PRIVILEGES ON ${MYSQL_DATABASE}.* TO '${MYSQL_USER}'@'%';
+FLUSH PRIVILEGES;
+"