[Unit]
ConditionDirectoryNotEmpty=/run/containers/udev-rules

[Service]
Type=oneshot
ExecStartPre=/bin/mkdir -p /run/udev/rules.d
ExecStart=/bin/sh -c 'cp /run/containers/udev-rules/*.rules /run/udev/rules.d/'
ExecStart=/usr/bin/udevadm control --reload
ExecStart=/usr/bin/udevadm trigger