diff --git a/test/acceptance/server.py b/test/acceptance/server.py
index 40bb513..cb7b8cb 100755
--- a/test/acceptance/server.py
+++ b/test/acceptance/server.py
@@ -30,7 +30,8 @@ def start_server() -> str:
         'docker', 'run',
         '--publish', '5001:5001',
         '--detach',
-        '--volume', f'{test_data_dir}:/AasxServerBlazor/aasxs',
+        # In Github actions, only shared volumes are allowed (suffix z)
+        '--volume', f'{test_data_dir}:/AasxServerBlazor/aasxs:z',
         'docker.io/adminshellio/aasx-server-blazor-for-demo:main',
     ])
     return container_id.decode().strip()