Add of the Django container
I modified the main file to build the new django image called
dev-django. I added the folder in the bootstrap and prepare.sh file.
I added the necessary configuration in the docker-compose.yaml based on
the rails example.
At the moment, the container by itself doesn't do anything except having
the python stack installed.
Signed-off-by:
Matthieu Berjon <matthieu.berjon@inria.fr>