diff --git a/Ubuntu.dockerfile b/Ubuntu.dockerfile
index 61be690..666d64f 100644
--- a/Ubuntu.dockerfile
+++ b/Ubuntu.dockerfile
@@ -58,4 +58,7 @@
   cd build && \
   cmake .. && \
   make && \
-  sudo make install
+  sudo make install &&\
+  ldconfig
+
+COPY build_test.sh /