add build directory

Author: daantimmer

.github/workflows/ci.yml

@@ -63,7 +63,7 @@ jobs:
         uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
         with:
           name: build-directory
-          path: .build
+          path: ./.build/*
           retention-days: 1
           if-no-files-found: error