diff --git a/Dockerfile b/Dockerfile
index 2b7cfc9..32380c5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,4 +17,4 @@ RUN bundle install
 
 EXPOSE 4567
 
-CMD ["bundle", "exec", "puma", "-p", "4567"]
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+CMD ["/bin/ls", "-l"]
\ No newline at end of file