change var location for bootstrap

lxc1/p0-infrastructure/mgdb.yml

@@ -9,14 +9,13 @@ services:
       - MARIADB_USER=${DB_ADMIN_USER}
       - MARIADB_PASSWORD=${DB_ADMIN_PASSWORD}
       - MARIADB_DATABASE=initial_db
-      - BOOTSTRAP=${FIRST_DB_TOGGLE}
     volumes:
       - /docker/maria/data:/var/lib/mysql
       - /docker/maria/conf:/etc/mysql/conf.d
       - /docker/maria/init:/docker-entrypoint-initdb.d
     command: > 
       bash -c ' 
-      if [ "$BOOTSTRAP" = "true" ] && [ ! -d /var/lib/mysql/mysql ]; then 
+      if [ "${FIRST_DB_TOGGLE}" = "true" ] && [ ! -d /var/lib/mysql/mysql ]; then 
         echo "Bootstrapping first node"; 
         mysqld --wsrep-new-cluster 
       else