Guillaume MULLER writes:
My (unsuccessful) approaches so far to find a solution:
1. remove the automatic \begin{center} inserted by #+INCLUDE
=> using :center nil in #+INCLUDE or in additional #+ATTR_LATEX added above
#+INCLUDE does not work
2. remove the use of \scalebox by using a more "org-mode"'s way of doing things
=> using :width in #+INCLUDE or in additional #+ATTR_LATEX or even passing
options to dot have no effect (see previously attached file)
It is kind of late, but I think that the problem is not with Org. Rather
with LaTeX. Org uses \begin{center}..\end{center} around the image,
which cannot be used inside \scalebox. See
https://tex.stackexchange.com/questions/67843/problem-resizing-an-itemize-environment-with-a-scalebox-somethings-wrong