diff --git a/Dockerfile b/Dockerfile
index 5d32b8c..4c56e58 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,8 @@
 FROM ruby:2.3
+USER root
+WORKDIR /build
 COPY . /build
-RUN cd build && \
-    bundle install
-ENTRYPOINT [ "/usr/local/bundle/bin/wayback_machine_downloader" ]
+
+RUN cd /build && \ bundle install --gemfile=/build/Gemfile
+# ENTRYPOINT [ "/usr/local/bundle/bin/wayback_machine_downloader" ]
+ENTRYPOINT [ "bundle", "exec", "--gemfile=/build/Gemfile", "wayback_machine_downloader" ]
\ No newline at end of file