We've created this Forum Thread with some workarounds and advice to assist you in publishing you ebook.
Photobook from PDF upload - NOT Template
I am a graduate student finishing a Masters of Architecture. I have made a portfolio using my own program (Adobe InDesign) and saved it as a packaged PDF file. I would like to make a hard cover photobook using this file, and DO NOT want to use a template. Everytime I try to make a photobook it promps me to choose a template. Is there a way around this and to be able to make the book I would like to create from my pdf file using lulu.com??