networks and network_mode service level conflict

templates/docker-compose.yml.j2

@@ -5,7 +5,6 @@ services:
     # Note: Check the recommend version here: https://docs.nextcloud.com/server/latest/admin_manual/installation/system_requirements.html#server
     image: postgres:alpine
     hostname: db
-    network_mode: slirp4netns
     restart: always
     volumes:
       - db:/var/lib/postgresql/data:Z
@@ -21,7 +20,6 @@ services:
   app:
     image: nextcloud:fpm-alpine
     hostname: app
-    network_mode: slirp4netns
     restart: always
     volumes:
       - nextcloud:/var/www/html:z
@@ -41,7 +39,6 @@ services:
   web:
     image: nginx:alpine-slim
     hostname: web
-    network_mode: slirp4netns
     restart: always
     volumes:
       # https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html
@@ -61,7 +58,6 @@ services:
   cron:
     image: nextcloud:fpm-alpine
     hostname: cron
-    network_mode: slirp4netns
     restart: always
     volumes:
       - nextcloud:/var/www/html:z
@@ -77,7 +73,6 @@ services:
   proxy:
     build: ./proxy
     hostname: proxy
-    network_mode: slirp4netns
     restart: always
     ports:
       - 8080:80
@@ -100,3 +95,4 @@ volumes:
 networks:
   podman:
   proxy-tier:
+    network_mode: slirp4netns