small update

docker/docker-compose.yml

@@ -1,9 +1,8 @@
-version: '3.7'
+version: '3.8'
 name: demo-tomcat
 services:
-  demo-tomcat:
+  demo-tomcat-app:
     image: svn.youshengyun.com:9923/demo-tomcat-jib:latest
-    container_name: demo-tomcat01
     restart: always
     extra_hosts:
       - "host.docker.internal:host-gateway"
@@ -11,7 +10,3 @@ services:
       - y9-share-net
     ports:
       - "9080:8080"
-        
-networks:
-  y9-share-net:
-    external: true