[Unit]
Description=Download cloud-init userdata
Requires=network-online.target
After=network-online.target
ConditionPathExists=!/etc/hcloud-userdata

[Service]
Type=oneshot
DynamicUser=yes
ExecStart=/usr/bin/curl --fail -s http://169.254.169.254/hetzner/v1/userdata
StandardOutput=truncate:/etc/hcloud-userdata

[Install]
WantedBy=multi-user.target