Install packages that require xrootd after setting up the yum repositories

Dockerfile

@@ -31,11 +31,6 @@ RUN yum -y --nogpg install \
     gdb gcc-c++ cmake3 libacl-devel perl-Test-Harness \
     rpm-build bzip2 automake autoconf libtool sudo vim \
     centos-release-scl-rh
-
-# Special packages, must be installed un-cached.
-RUN yum clean all; \
-    yum -y --nogpg install \
-    quarkdb grid-hammer davix
     
 # Install new EOS from created repo - the ADD command will reset the docker cache,
 # and any commands after that point will be uncached.
@@ -44,7 +39,9 @@ ADD cc7_artifacts ${EOSREPODIR}
 
 RUN createrepo ${EOSREPODIR}; \
     echo -e "[eos-artifacts]\nname=EOS artifacts\nbaseurl=file://${EOSREPODIR}\ngpgcheck=0\nenabled=1\npriority=1" >> /etc/yum.repos.d/eos.repo; \
-    echo -e '[eos-depend]\nname=EOS dependencies\nbaseurl=http://storage-ci.web.cern.ch/storage-ci/eos/citrine-depend/el-7/x86_64/\ngpgcheck=0\nenabled=1\npriority=1\n' >> /etc/yum.repos.d/eos-depend.repo
+    echo -e '[eos-depend]\nname=EOS dependencies\nbaseurl=http://storage-ci.web.cern.ch/storage-ci/eos/citrine-depend/el-7/x86_64/\ngpgcheck=0\nenabled=1\npriority=1\n' >> /etc/yum.repos.d/eos-depend.repo \
+    # Special packages, must be installed un-cached.
+    RUN yum -y --nogpg install quarkdb grid-hammer davix \
     yum -y --nogpg install \
     eos-server eos-testkeytab eos-archive eos-client \
     eos-debuginfo eos-fuse eos-fusex eos-test