This project aims to generate the Symfony 3.0 documentation in epub format.
Note that, the epub file was already generated and you can download it directly by following this link meaning that there's no need to install it if your intention is just to generate the epub file. =D
The first thing that has to be done is to create a docker build, you can reach this goal by executing the following line of code on your terminal:
docker build --tag=symfony-docs-builder .
Now, you just have to execute the following code in order to generate the epub file:
docker run --rm -v "${PWD}/output:/output" symfony-docs-builder epub
It will process all the documentation files from symfony/symfony-docs and in the end it will put your desired file on output/epub/SymfonyFrameworkDocumentation.epub.
I hope it helps you! =D