$ python3.6 -m venv env
$ source env/bin/activate
pip install -r requirements.txt
pip freeze > requirements.txt
pip install gunicorn psycopg2-binary
python manage.py makemigrations
python manage.py migrate
https://docs.djangoproject.com/en/3.0/topics/migrations/
python manage.py createsuperuser
see https://docs.djangoproject.com/en/3.0/howto/static-files/deployment
$ python manage.py collectstatic
django-admin makemessages -l es django-admin compilemessages
python manage.py runserver
sudo lsof -t -i tcp:8000 | xargs kill -9