See the documentation here

how to run locally

first time

• make a copy of the .env.example file and call the copy .env
• fill out the DJANGO_SECRET_KEY value in .env with a random secret-ish string
• setup a local postgres database and point to it in .env
  • on macs, we suggest using Postgres.app
  • you can also use Postico to manage your local databases
  • the DATABASE_URL value in .env should look like postgresql://USER@localhost:5432/SOMEDB where USER is your username on your local computer and SOMEDB is the name of the database you created.
• then, run:

python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt
python manage.py migrate

every time

source venv/bin/activate
python manage.py runserver