Ubuntu 20.04 on QEmu working

scripts/minimize.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+
+set -e
+set -x
+
+rm -rf /home/vagrant/.ansible
+sudo rm -rf /root/.ansible
+
+#if [[ "${PACKER_BUILD_NAME}" != *"silverblue"* ]]; then
+	sudo dd if=/dev/zero of=/var/EMPTY bs=1M || :
+	sync
+	sudo rm /var/EMPTY
+	sync
+#fi
+
+# In CentOS 7, blkid returns duplicate devices
+swap_device_uuid=`sudo /sbin/blkid -t TYPE=swap -o value -s UUID | uniq`
+swap_device_label=`sudo /sbin/blkid -t TYPE=swap -o value -s LABEL | uniq`
+if [ -n "$swap_device_uuid" ]; then
+  swap_device=`readlink -f /dev/disk/by-uuid/"$swap_device_uuid"`
+elif [ -n "$swap_device_label" ]; then
+  swap_device=`readlink -f /dev/disk/by-label/"$swap_device_label"`
+fi
+
+if [ ! -z "${swap_device}" -a -e "${swap_device}" ]; then
+	sudo /sbin/swapoff "$swap_device"
+	sudo dd if=/dev/zero of="$swap_device" bs=1M || :
+	sudo /sbin/mkswap ${swap_device_label:+-L "$swap_device_label"} ${swap_device_uuid:+-U "$swap_device_uuid"} "$swap_device"
+fi