Update entrypoint in Dockerfile.production to point to run_test.sh

Change-Id: I8396b20cb22133b8eaa7b84d05743aa3ede47bfe
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/Dockerfile.production b/Dockerfile.production
index 5fffd7d..714c02f 100644
--- a/Dockerfile.production
+++ b/Dockerfile.production
@@ -151,4 +151,4 @@
 
 RUN cat /dev/zero | ssh-keygen -t rsa -q -N "" > /dev/null
 
-ENTRYPOINT [ "/bin/sh" ]
+ENTRYPOINT ["/robot-systest/run_test.sh"]