[3337411207] Upstream Reporter: mpu-ssg
Upstream issue status: Open
Upstream description:

Currently experimenting with Flatcar, I'm using butane to generate my ignition file.
Documentation suggests the use of `oem:///` to retrieve files from `/oem` partition during ignition phase.

```
With the special oem:/// file URL the config can copy files from the OEM Partition to the root filesystem
```

Source: https://www.flatcar.org/docs/latest/installing/customizing-the-image/customize-the-image/#customizing-the-oem-partition

I haven't found any issue about this topic. Also it appears Ignition specification does not mention this, even the Flatcar one (https://www.flatcar.org/docs/latest/provisioning/ignition/specification/).