app.conf

# data/nginx/app.conf

upstream app {
  server app:8000;
}

server {
  listen 80;
  server_name localhost; # your-domain.com;

  # uncomment this next block if you want only HTTPS connections
  # this will require more work, though, as you'll need
  # valid SSL certificates
  
  # location / {
  #   return 301 https://$host$request_uri;
  # }

  location / {
    proxy_pass http://app;
    proxy_set_header Host $http_host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }
}

database_env

# data/postgres/database_env

POSTGRES_USER=database_role
POSTGRES_PASSWORD=database_password
POSTGRES_DB=project_database

docker-compose.yml

version: "3"

services:
  nginx:  # nginx is a web server, we use this for static assets and redirects
    image: nginx:1.15-alpine
    ports:
      - "80:80"  # this will actually make your site available on `localhost` with no port
      - "443:443"  # only used for HTTPS
    volumes:
      - ./data/nginx:/etc/nginx/conf.d
    command: '/bin/sh -c ''while :; do sleep 6h & wait $${!}; nginx -s reload; done & nginx -g "daemon off;"'''
    networks:
      - frontend
    depends_on:
      - app  # make sure the app container is started
  database:
    image: postgres:10
    ports:
      - "5432:5432"  # you likely don't need this if you don't use a local postgres gui
    volumes:
      - pg_data:/var/lib/postgresql/data
      - pg_backups:/pg_backups
    env_file:
      - data/postgres/database_env  # this sets up passwords and such
    networks:
      - backend  # so django can talk to the database
  app:  # this is our Django app
    build: .  # our Dockerfile is in the current dir and should be used to create this container
    restart: always
    ports:
      - "8000:8000"  # expose runserver's port
    depends_on:
      - database  # gotta have a database
    networks:
      - frontend  # so nginx can talk to django
      - backend  # so django can talk to the database
    volumes:
      - ./app:/opt/app  # put our local "app" directory into the container at /opt/app
  manage:  # this is just for convenience
    build: .
    command: shell  # run the `shell` management command by default
    entrypoint: /usr/local/bin/python3 /opt/app/manage.py  # append the command to this path
    networks:
      - backend  # so django can talk to the database
    volumes:
      - ./app:/opt/app  # we need the same code available as `app`, so put it in the same place
    depends_on:
      - database  # needs the database to be able to run migrations and such

volumes:
  pg_data: {}
  pg_backups: {}

networks:
  frontend:
    driver: bridge
  backend:
    driver: bridge

Dockerfile

FROM python:3.7

RUN apt-get update && \
  apt-get install -y && \
  pip3 install uwsgi

COPY ./app /opt/app

RUN python -m pip install --upgrade pip
RUN pip3 install -r /opt/app/requirements.txt

ENV DJANGO_ENV=prod
ENV PYTHONUNBUFFERED 1

EXPOSE 8000

CMD ["uwsgi", "--ini", "/opt/app/uwsgi.ini"]

uswsgi.ini

[uwsgi]
http-socket = :8000
chdir = /opt/app
module = app.wsgi
master = 1
processes = 2
threads = 2
py-autoreload = 3