diff --git a/z1/prepare-app.sh b/z1/prepare-app.sh
index 8f32f99..8fdc23a 100755
--- a/z1/prepare-app.sh
+++ b/z1/prepare-app.sh
@@ -1,2 +1,3 @@
 #!/bin/bash
 docker compose build
+docker network create test-net