Alpine Linux Samba

I am trying to figure out how to make a very small distro of Alpine, to do this and I want it to be a ISO.

Smallest core Alpine OS.
Able to detect network card.
Boot up with no username or password. Maybe prompt username and password?
Auto mount all SATA drives
Load samba with or without a account with full rights.

This way I can go to another machine and access the mounts contents.

I have a PXE server, and want to use this to PXE boot any system, and copy data from the share.

I have no clue on how to go about this.

I am currently using fatdog, but its rather large ISO.