added zabbix server

docker-compose.yml

@@ -404,7 +404,23 @@ services:
       MYSQL_USER: zabbix
       MYSQL_DATABASE: zabbix
       MYSQL_PASSWORD: ${ZABBIX_MYSQL_PASSWORD}
-  
+  zabbix-server:
+    deploy:
+      placement:
+        constraints: [node.labels.com.sigyl.git-stack == yes]
+      replicas: 1
+      restart_policy:
+        condition: any
+    image: zabbix/zabbix-server-mysql
+    networks:
+      - appnet
+    environment:
+      DB_SERVER_HOST: zabbix-mariadb
+      MYSQL_USER: zabbix
+      MYSQL_PASSWORD: ${ZABBIX_MYSQL_PASSWORD}
+    networks:
+      - appnet
+
   # The backend guacamole server.
   guacd:
     deploy: