feat: add cloud-init and virt-customize method

virt-customize_method/.gitignore

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+*.qcow2
+vm

virt-customize_method/.ssh/authorized_keys

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+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBeNeE0gk6mO0Bz9dDvKQrhA2Oo7x05FicCQJivxqIyi sandbox

virt-customize_method/README.md

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+# Initial setup of debian VM with virt-customize + netplan
+
+This method consist of using the debian generic cloud image and just customizing it before first boot with the [virt-customize](https://man.archlinux.org/man/virt-customize.1.en) util.
+
+Then for the network config, we will be using [netplan](https://netplan.readthedocs.io/en/stable/).
+
+

virt-customize_method/init.sh

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+#!/usr/bin/sh
+base="$(pwd)"
+mkdir -p vm
+cd vm
+wget -N https://cloud.debian.org/images/cloud/bookworm/latest/debian-12-generic-amd64.qcow2
+
+virt-customize \
+        --add ./debian-12-generic-amd64.qcow2 \
+        --root-password password:root \
+        --hostname "sandbox05" \
+        --firstboot-install "procps,psmisc,vim,net-tools,curl,dnsutils,file,tmux" \
+        --copy-in "$base/netplan:/etc" \
+        --copy-in "$base/.ssh:/root" \
+        --firstboot-command 'netplan apply && ssh-keygen -A && systemctl restart sshd'
+

virt-customize_method/netplan/50-dhcp.yaml

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+network:
+  version: 2
+  ethernets:
+    all-en:
+      match:
+        name: "en*"
+      dhcp4: true
+      dhcp6: true
+

virt-customize_method/run.sh

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+cd vm
+qemu-system-x86_64                                            \
+    -net nic                                                    \
+    -net user                                                   \
+    -machine accel=kvm                                          \
+    -cpu host                                                   \
+    -m 512                                                      \
+    -nographic                                                  \
+    -hda ./debian-12-generic-amd64.qcow2