[Devops] Add Blender source to Docker images (#21793)
I am working to add a CI workflow to build/run Blender on Linux, we
already have one for Windows.
Preparing the Blender source is a bit complicated and it's a large
download (~1GB) so let's just add it to a new Blender Docker image so
running the CI job will be fast.
---------
Signed-off-by: Nick Sarnie <nick.sarnie@intel.com>
