Is there a guide anywhere on how we can implement from scratch on ubuntu ?
There is nobody relevant to answer you, excepting a newbie not knowing the forum rules and a barber which shills this project on Facebook, in the free time he has between two haircuts. OP of this thread -
Webdollar.io was last active on May 11th, 2019, therefore there are very low chances for OP to come here and answer you.
Actually, i found one here -->
https://webdollar.aji.ro/webdollar-mining-with-windows-terminal/ and migrated the node to a windows machine.
a bit sad though that my ubuntu implementation broke, had it running since the beginning of POS