Install centos-release-scl-rh package. This provides the libasan repo, which...

Install centos-release-scl-rh package. This provides the libasan repo, which is needed when running EOS unit tests.

Dockerfile

@@ -29,7 +29,8 @@ RUN yum -y --nogpg install \
     createrepo initscripts less nano \
     git parallel compat-libf2c-34 libgfortran \
     gdb gcc-c++ cmake3 libacl-devel perl-Test-Harness \
-    rpm-build bzip2 automake autoconf libtool sudo
+    rpm-build bzip2 automake autoconf libtool sudo \
+    centos-release-scl-rh
 
 # Special packages, must be installed un-cached.
 RUN yum clean all; \