diff --git a/Dockerfile b/Dockerfile
index f540915..3170907 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,6 +11,7 @@ RUN curl -sL https://deb.nodesource.com/setup_8.x | bash - && \
     apt-get install -y --no-install-recommends nodejs yarn && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
 
+RUN ls
 RUN gem update --system && gem install bundler
 
 # Enable Nginx / Passenger