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

[Service]
Type=oneshot
DynamicUser=yes
ExecStart=/usr/local/bin/hcloud-metadata
StandardOutput=truncate:/etc/hcloud-metadata.json

[Install]
WantedBy=multi-user.target