Fix some deficiencies in enter.sh

cleanup.sh

@@ -3,9 +3,4 @@
 # delete all temporary stuff
 . config || exit 0
 
-sudo umount ${FS}/dev/pts || true
-sudo umount ${FS}/sys/kernel/security || true
-sudo umount ${FS}/sys || true
-sudo umount ${FS}/proc || true
-sudo umount ${MNT} || true
 sudo rm --one-file-system -rf ${FS} ${ISO} ${MNT} ${DISK}

enter.sh

@@ -51,7 +51,7 @@ start_container() {
                 --directory $(realpath $FS) \
                 --machine $MACH
     echo "Waiting..."
-    while ! machinectl status $MACH >/dev/null 2>&1 ; do
+    while ! env SYSTEMD_LOG_LEVEL=0 machinectl shell $MACH /bin/true ; do
         sleep 0.1
     done
 }
@@ -94,8 +94,6 @@ run "echo 'nameserver 8.8.8.8' > /run/resolvconf/resolv.conf"
 #run "dpkg-divert --local --rename --add /usr/sbin/update-grub"
 #run "ln -sf /bin/true /usr/sbin/update-grub"
 
-run "ping -c 5 google.com"
-
 set +e
 if [ -z "$1" ] ; then
     run "exec bash"
@@ -105,14 +103,22 @@ fi
 
 echo "Cleaning up..."
 
+# Manually clean up some unnecessary things that show up after booting
+# an image and installing packages.  This doesn't get everything, but
+# what's left should be fine.
 run "apt-get clean"
+run "rm -f /core /boot/grub/grubenv"
+run "rm -f /var/lib/systemd/random-seed"
+run "rm -f /var/lib/ubuntu-drivers-common/last_gfx_boot"
+run "rm -f /var/lib/NetworkManager/*"
+run "rm -f /root/.bash_history"
+
 #run "rm /sbin/initctl"
 #run "dpkg-divert --rename --remove /sbin/initctl"
 #run "rm /usr/sbin/update-grub"
 #run "dpkg-divert --rename --remove /usr/sbin/update-grub"
 #run "rm /var/lib/dbus/machine-id"
 #run "> /etc/resolv.conf"
-run "rm -f /root/.bash_history"
 
 kill_container