diff --git a/.env.example b/.env.example
index a4061de..7a8c44a 100644
--- a/.env.example
+++ b/.env.example
@@ -1,5 +1,6 @@
 # docker
 VOLUME_PATH=/data/nextcloud
+DOCKER_PROXY_EXT=false
 DOCKER_PROXY_NETWORK=proxy
 
 # nextcloud
diff --git a/docker-compose.yaml b/docker-compose.yaml
index 3805d8f..7f7d17c 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -12,7 +12,7 @@ secrets:
 
 networks:
   frontend:
-    external: true
+    external: ${DOCKER_PROXY_EXT-true}
     name: ${DOCKER_PROXY_NETWORK}
   backend: