Protect MariaDB Pass variable

backup.sh

@@ -2,6 +2,11 @@
 
 echo "Backing up Keycloak DB and config"
 
+if [ -z "$MARIADB_PASS" ]; then
+  echo "Error: the MARIADB_PASS variable is not set or is empty."
+  exit 1
+fi
+
 if [ ! -d "backups" ]; then
   mkdir "backups"
 fi