diff --git a/docker.nix b/docker.nix
index fb9c2c6..e265840 100644
--- a/docker.nix
+++ b/docker.nix
@@ -93,7 +93,7 @@ pkgs.dockerTools.buildImage {
   extraCommands = ''
     mkdir -p -m 1777 tmp
     mkdir -p app
-    cp -r ${phaseflow}/* app/
+    cp -r ${phaseflow}/. app/
   '';
 
   config = {