SECRET_KEY=...
DEBUG=True
DB_NAME=...
DB_USER=...
DB_PASSWORD=...
DB_HOST=localhost
ALLOWED_HOSTS=.localhost, .herokuapp.com
GOOGLE_RECAPTCHA_SECRET_KEY=...
AWS_ACCESS_KEY_ID=...
AWS_SECRET_ACCESS_KEY=...
AWS_STORAGE_BUCKET_NAME=...
SECURE_SSL_REDIRECT='False'

...
LOGIN_URL = 'login'
ALLOWED_HOSTS = config('ALLOWED_HOSTS', default=[], cast=Csv())
DEBUG = config('DEBUG', default=False, cast=bool)
SECRET_KEY = config('SECRET_KEY')
SHARED_APPS = (
    'django_tenants',
    'tenant',

    'django.contrib.contenttypes',

    'public.apps.PublicConfig',
    'django.contrib.staticfiles',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.sessions',
    'debug_toolbar',
    'storages'
)

TENANT_APPS = (
    'django.contrib.contenttypes',

    'inventory.apps.InventoryConfig',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.sessions',
    'django.contrib.messages',
)
INSTALLED_APPS = list(SHARED_APPS) + [app for app in TENANT_APPS if app not in SHARED_APPS]

TENANT_MODEL = 'tenant.Client'
TENANT_DOMAIN_MODEL = 'tenant.Domain'
MIDDLEWARE = [
    'django_tenants.middleware.main.TenantMainMiddleware',
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'debug_toolbar.middleware.DebugToolbarMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'whitenoise.middleware.WhiteNoiseMiddleware',
]
ROOT_URLCONF = 'myapp.urls'
WSGI_APPLICATION = 'myapp.wsgi.application'
DATABASE_ROUTERS = (
    'django_tenants.routers.TenantSyncRouter',
)

PUBLIC_SCHEMA_URLCONF = 'myapp.urls_public'
SECURE_SSL_REDIRECT = config('SECURE_SSL_REDIRECT', default=False, cast=bool)
...

...
ALLOWED_HOSTS: .herokuapp.com, .mydomain.com, mydomain.com
DEBUG: False
SECURE_SSL_REDIRECT: True
...