docker-compose.yml

version: "3"

services:
  backend:
    build: ./backend
    command:
       - ./backend/entypoint.sh
    volumes:
      - ./backend/:/usr/src/backend/
      - django-static:/usr/src/backend/static
      - django-media:/usr/src/backend/media
    restart: unless-stopped
    env_file:
      - ./backend/.env.dev
    depends_on:
      - db

  db:
    container_name: db_drpv
    image: postgres:12
    volumes:
        - postgres_data:/var/lib/postgresql/data
    environment:
      - POSTGRES_USER=hello_django
      - POSTGRES_PASSWORD=hello_django
      - POSTGRES_DB=hello_django_dev

  redis:
    image: redis:2.8

  nginx:
    container_name: nginx_drpv
    build:
      context: .
      dockerfile: nginx/Dockerfile
    ports:
      - "80:80"
    depends_on:
      - backend
    volumes:
      - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
      - django-static:/usr/src/app/static

volumes:
  postgres_data:
  django-static:
  django-media:
  portainer-data:


Dokerfile
FROM python:3.8.3

WORKDIR /usr/src/backend

ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1

RUN pip install --upgrade pip
COPY ./requirements.txt .
RUN pip install -r requirements.txt

COPY ./entrypoint.sh .

COPY . .


entrypoint.sh

if [ "$DATABASE" = "postgres" ]
then
    echo "Waiting for postgres..."

    while ! nc -z $SQL_HOST $SQL_PORT; do
      sleep 0.1
    done

    echo "PostgreSQL started"
fi

python manage.py makemigrations
python manage.py migrate
daphne -p 8001 task3.asgi:application

exec "$@"