Initial commit - it works!

src/user-data

@@ -0,0 +1,33 @@
+#cloud-config
+
+# The networking setup is a bit of a hack, because the cloud-init network
+# configuration doesn't support WiFi, see
+# https://cloudinit.readthedocs.io/en/latest/topics/network-config-format-v2.html.
+
+users:
+  - name: $USERNAME
+    gecos: $USERFULLNAME
+    groups: [sudo, users]
+    sudo: ALL=(ALL) NOPASSWD:ALL
+    lock_passwd: false
+    shell: /bin/bash
+    ssh_authorized_keys:
+      - $SSH_PUBKEY
+
+runcmd:
+  # Disable optional PAM features for faster SSH login
+#  - 'mv /etc/pam.d/sshd /etc/pam.d/sshd.bak'
+#  - 'sed "s/^session[ \t]\+optional/#\0/" /etc/pam.d/sshd.bak > /etc/pam.d/sshd'
+
+  # Back up the SSH default config and activate the new config
+#  - 'mv /etc/ssh/sshd_config /etc/ssh/sshd_config.bak'
+#  - 'mv /etc/ssh/sshd_config.new /etc/ssh/sshd_config'
+#  - 'service ssh reload'
+
+  # Multi-arch support on aarch64
+  - 'dpkg --add-architecture armhf'
+
+  # Run optional script for additoinal package setup
+  - '/boot/firmware/cloud-init/initial-setup.sh'
+  - '/boot/firmware/cloud-init/install-torch.sh'
+  - 'reboot now'