settings.py

import os
import environ
import datetime
import django as django_module

from django.conf.locale.ru import formats as ru_formats

ru_formats.DATE_FORMAT = 'd.m.Y'
ru_formats.DATETIME_FORMAT = 'd.m.Y G:i'

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

DJANGO_DIR = os.path.dirname(django_module.__file__)

root = environ.Path(__file__) - 2

env = environ.Env(
    DEBUG=(bool, False),
)
environ.Env.read_env('.env')

DEBUG = env('DEBUG', False)

ALLOWED_HOSTS = ['*']

TEMPLATES[0]['DIRS'] = [
  os.path.join(BASE_DIR, 'app/templates'),
  DJANGO_DIR
]

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': env.str('POSTGRES_DB'),
        'USER': env.str('POSTGRES_USER'),
        'PASSWORD': env.str('POSTGRES_PASSWORD'),
        'HOST': 'postgres-host',
        'PORT': '5432'
    }
}

STATIC_URL = '/static/'
MEDIA_URL = '/media/'

STATIC_ROOT = os.path.join(BASE_DIR, 'public/static')
MEDIA_ROOT = os.path.join(BASE_DIR, 'public/media')

if DEBUG is False:
    import sentry_sdk
    from sentry_sdk.integrations.django import DjangoIntegration

    sentry_sdk.init(
        dsn="",
        integrations=[DjangoIntegration()]
    )

urls.py

from django.urls import path, include
from django.conf import settings

if settings.DEBUG:
    from django.conf.urls.static import static
    from django.contrib.staticfiles.urls import staticfiles_urlpatterns
    urlpatterns += staticfiles_urlpatterns()
    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)