fix docker file, add correct path for ibnstall.sh
diff --git a/scripts/Dockerfile b/scripts/Dockerfile
index 25ee360..4c6a262 100644
--- a/scripts/Dockerfile
+++ b/scripts/Dockerfile
@@ -13,6 +13,6 @@
 RUN git clone https://github.com/Mirantis/disk_perf_test_tool.git \
     /opt/disk_perf_tool
 
-RUN cd /opt/disk_perf_tool; bash install.sh --full
+RUN cd /opt/disk_perf_tool/scripts; bash install.sh --full
 
 RUN ["/bin/bash"]