Added internal network between nextcloud and its db

docker-compose.yml

@@ -13,6 +13,9 @@ services:
     volumes:
       - ${LOCAL_STACK_DIR}/nextcloud/data:/var/www/html
       - /etc/timezone:/etc/timezone:ro
+    networks:
+      - default
+      - nextcloud
     env_file:
       - nextcloud.env
       - nc_db.env
@@ -25,6 +28,8 @@ services:
     restart: ${DB_RESTART:-unless-stopped}
     volumes:
       - ${LOCAL_STACK_DIR}/db/data:/var/lib/mysql
+    networks:
+      - nextcloud
     env_file:
       - nc_db.env
     environment:
@@ -34,3 +39,5 @@ networks:
   default:
     external:
       name: ${NETWORK}
+  nextcloud:
+    external: false