dal:
...
> I meant the boot media as vmlinuz + initramfs or an ISO or something bootable,
> i.e. the contents of that media.
>
> Devuan does not provide such installation media / data.
>
> It seems that netboot (pxe-style) is not a target scenario for Devuan,
> which is a shame.
...

First, it may be unfortunately for you, but don't shame others.

Second, what do you want ?
Do you want:
 a, files for pxe style booting and installing
 b, a minimal cd (or usb stick) which is booted locally, and take
    the rest of the installation from the net
 c, something that helps you install on a large number of computers

Regards,
/Karl Hammar