gistfile1.txt

services:
 db:
   image: postgres:17
   environment:
     POSTGRES_DB: ${DATABASE_NAME}
     POSTGRES_USER: ${DATABASE_USERNAME}
     POSTGRES_PASSWORD: ${DATABASE_PASSWORD}
   ports:
     - "5432:5432"
   env_file:
     - .env

 django-web:
   build: .
   container_name: django-docker
   ports:
     - "8000:8000"
   depends_on:
     - db
   environment:
     DJANGO_SECRET_KEY: ${DJANGO_SECRET_KEY}
     DEBUG: ${DEBUG}
     DJANGO_LOGLEVEL: ${DJANGO_LOGLEVEL}
     DJANGO_ALLOWED_HOSTS: ${DJANGO_ALLOWED_HOSTS}
     DATABASE_ENGINE: ${DATABASE_ENGINE}
     DATABASE_NAME: ${DATABASE_NAME}
     DATABASE_USERNAME: ${DATABASE_USERNAME}
     DATABASE_PASSWORD: ${DATABASE_PASSWORD}
     DATABASE_HOST: ${DATABASE_HOST}
     DATABASE_PORT: ${DATABASE_PORT}
   env_file:
     - .env

PostgreSQL:

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.{}'.format(
            os.getenv('DATABASE_ENGINE', 'sqlite3')
        ),
        'NAME': os.getenv('DATABASE_NAME', 'polls'),
        'USER': os.getenv('DATABASE_USERNAME', 'myprojectuser'),
        'PASSWORD': os.getenv('DATABASE_PASSWORD', 'password'),
        'HOST': os.getenv('DATABASE_HOST', '127.0.0.1'),
        'PORT': os.getenv('DATABASE_PORT', 5432),
    }
}