* Add Dockerfile. * Add gunicorn config files for local development. * Add .dockerignore file. Co-authored-by: Joseph Mulloy <jmulloy@edx.org> Co-authored-by: Fred Smith <derf@edx.org> Co-authored-by: Adam Blackwell <ablackwell@edx.org> Co-authored-by: Kyle McCormick <kmccormick@edx.org> Co-authored-by: Nadeem Shahzad <nshahzad@edx.org>