diff --git a/docker/windows/Dockerfile b/docker/windows/Dockerfile
index 5bc0669bd..9948cc547 100644
--- a/docker/windows/Dockerfile
+++ b/docker/windows/Dockerfile
@@ -22,6 +22,7 @@ EXPOSE 10933
 
 # Either from a build artifact dependency or local build output.
 COPY _artifacts/tentacle/ ${INSTALLATION_FOLDER}
+RUN dir ${INSTALLATION_FOLDER}
 
 RUN setx path "%path%;${INSTALLATION_FOLDER}"
 RUN tentacle create-instance --console --instance Tentacle --config C:\Octopus\Tentacle.config