add debug info and gdb

xcache.singularity.def

@@ -33,9 +33,10 @@ Purpose Xcache-for-RUCIO
   curl -s -o /etc/yum.repos.d/wlcg-centos7.repo http://linuxsoft.cern.ch/wlcg/wlcg-centos7.repo
 
   yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
-  yum install -y xrootd-server xrootd-client xrootd
+  yum install -y xrootd-server xrootd-client xrootd xrootd-debuginfo
   yum install -y xrootd-rucioN2N-for-Xcache
   yum install -y vomsxrd
+  yum install -y gdb
   mkdir -p /data 
 
   echo "g /atlas / rl" > /etc/xrootd/auth_db