Simplify disk setup process

capsulflask/shell_scripts/create.sh

@@ -5,8 +5,7 @@
 # POSIX or die
 
 vmname="$1"
-# resolve the .qcow2 symlink so backing images never change
-template_file="/tank/img/$(readlink /tank/img/$2)"
+template_file="/tank/img/$2"
 vcpus="$3"
 memory="$4"
 pubkeys="$5"
@@ -48,7 +47,7 @@ if [ -f /tank/vm/$vmname.qcow2 ]; then
     exit 1
 fi
 
-qemu-img create -f qcow2 -b "$template_file" "$disk"
+cp "$template_file" "$disk"
 cp /tank/config/cyberia-cloudinit.yml /tmp/cloudinit.yml
 echo "$pubkeys" | while IFS= read -r line; do
   echo "      - $line" >> /tmp/cloudinit.yml