fedora: fix (un)mounting issues

scripts_fedora/02_install_groups.sh

@@ -14,4 +14,4 @@ yum clean all -c $PWD/yum.conf $YUM_OPTS -y --installroot=$PWD/mnt
 yum install -c $PWD/yum.conf $YUM_OPTS -y --installroot=$INSTALLDIR $PKGGROUPS || RETCODE=1
 yum update -c $PWD/yum.conf $YUM_OPTS -y --installroot=$INSTALLDIR || RETCODE=1
 
-umount mnt/proc mnt
+umount mnt/proc

scripts_fedora/04_install_qubes.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 echo "--> Preparing environment..."
-mount -t proc proc $PWD/proc
+mount -t proc proc $PWD/mnt/proc
 
 echo "--> Installing RPMs..."
 export YUM0=$PWD/yum_repo_qubes
@@ -9,4 +9,4 @@ yum install -c $PWD/yum.conf $YUM_OPTS -y --installroot=$(pwd)/mnt @qubes-vm
 echo "--> Installing 3rd party apps"
 $SCRIPTSDIR/add_3rd_party_software.sh
 
-sudo umount $PWD/proc
+sudo umount $PWD/mnt/proc