How to Host a Django Application on Vertra Cloud

my-django-project/
├── manage.py
├── my_project/
│   ├── __init__.py
│   ├── settings.py
│   ├── urls.py
│   └── wsgi.py
├── my_apps/
│   ├── models.py
│   ├── views.py
│   └── urls.py
├── requirements.txt
└── vertracloud.config

django==4.2.0
gunicorn==21.2.0
psycopg2-binary==2.9.9
python-decouple==3.8
whitenoise==6.5.0

import os
from pathlib import Path
from decouple import config

BASE_DIR = Path(__file__).resolve().parent.parent

# Security
SECRET_KEY = config('SECRET_KEY')  # no default: set it in the application's environment variables
DEBUG = config('DEBUG', default=False, cast=bool)
ALLOWED_HOSTS = config('ALLOWED_HOSTS').split(',')  # e.g. my-app.vertraweb.app,example.com

# Applications
INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'my_apps',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'whitenoise.middleware.WhiteNoiseMiddleware',  # Add WhiteNoise
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
]

ROOT_URLCONF = 'my_project.urls'

# Database
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': config('DB_NAME', default='vertracloud'),
        'USER': config('DB_USER', default='vertracloud'),
        'PASSWORD': config('DB_PASSWORD', default=''),
        'HOST': config('DB_HOST', default='localhost'),
        'PORT': config('DB_PORT'),  # unique per database, copy it from the dashboard
        # Vertra databases require TLS and the client certificate (see /databases)
        'OPTIONS': {
            'sslmode': 'verify-full',
            'sslrootcert': config('DB_SSL_PEM', default='certificate.pem'),
            'sslcert': config('DB_SSL_CRT', default='certificate.crt'),
            'sslkey': config('DB_SSL_KEY', default='certificate.key'),
        },
    }
}

# Static files
STATIC_URL = '/static/'
STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
STATICFILES_STORAGE = 'whitenoise.storage.CompressedManifestStaticFilesStorage'

# HTTPS: TLS ends at the platform proxy, so trust its forwarded protocol header
# (without it, SECURE_SSL_REDIRECT would redirect every request in a loop)
SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')
SECURE_SSL_REDIRECT = not DEBUG
SESSION_COOKIE_SECURE = not DEBUG
CSRF_COOKIE_SECURE = not DEBUG

MAIN=manage.py
START=gunicorn --bind 0.0.0.0:$PORT my_project.wsgi:application
VERSION=recommended