fedorize_image: use local copy of yum.conf

fedorize_image

@@ -50,7 +50,7 @@ fi
 mount -t proc proc mnt/proc
 PKGGROUPS=$(cat $PKGLISTFILE)
 echo "-> Installing package groups..."
-yum install $YUM_OPTS -y --installroot=$INSTALLDIR $PKGGROUPS || RETCODE=1
+yum install -c $PWD/yum.conf $YUM_OPTS -y --installroot=$INSTALLDIR $PKGGROUPS || RETCODE=1
 
 umount mnt/proc mnt
 

yum.conf

@@ -0,0 +1,21 @@
+[main]
+cachedir=/var/cache/yum/$basearch/$releasever
+keepcache=0
+debuglevel=2
+logfile=/var/log/yum.log
+exactarch=1
+obsoletes=1
+gpgcheck=1
+plugins=1
+installonly_limit=3
+color=never
+
+#  This is the default, if you make this bigger yum won't see if the metadata
+# is newer on the remote and so you'll "gain" the bandwidth of not having to
+# download the new metadata and "pay" for it by yum not having correct
+# information.
+#  It is esp. important, to have correct metadata, for distributions like
+# Fedora which don't keep old packages around. If you don't like this checking
+# interupting your command line usage, it's much better to have something
+# manually check the metadata once an hour (yum-updatesd will do this).
+# metadata_expire=90m