arch-toolbox image has 'VERSION_ID=TEMPLATE_VERSION_ID' in os-release(5)

**Describe the bug**
The new Toolbx image for Arch Linux has `VERSION_ID=TEMPLATE_VERSION_ID` in `os-release(5)`. This is a bit odd, and isn't present on Arch hosts.

**Steps how to reproduce the behaviour**

`podman run --rm quay.io/toolbx-images/archlinux-toolbox:latest cat /etc/os-release`

/cc @Foxboron

Start by running the reported podman command and inspect /etc/os-release in the Arch Linux toolbox image, then compare VERSION_ID with an Arch host. Trace the image source that supplies this file and update the value so it no longer contains TEMPLATE_VERSION_ID; done means the command reports the expected Arch VERSION_ID.

Written by the indexing model from the issue text.