add missing RUN command

Change-Id: I0c4ae8d301e5a5d428e11a368d9abf2f47dd1b3e
Signed-off-by: Grinberg Moti <mg877n@att.com>
diff --git a/sdc-os-chef/sdc-backend/Dockerfile b/sdc-os-chef/sdc-backend/Dockerfile
index ebb56a4..47ca00e 100644
--- a/sdc-os-chef/sdc-backend/Dockerfile
+++ b/sdc-os-chef/sdc-backend/Dockerfile
@@ -15,7 +15,7 @@
 
 # install chef-solo
 #RUN curl -L http://www.opscode.com/chef/install.sh | bash
-bash chef-install.sh
+RUN bash chef-install.sh
 
 ADD onboarding-be-__SDC-RELEASE__.war          ${JETTY_BASE}/webapps/
 ADD catalog-be-__SDC-RELEASE__.war             ${JETTY_BASE}/webapps/