BTHLABS-64: Support for customized environments

Co-authored-by: Tomek Wójcik <labs@tomekwojcik.pl>
Co-committed-by: Tomek Wójcik <labs@tomekwojcik.pl>

services/backend/hotpocket_backend/settings/deployment/build.py

@@ -4,13 +4,15 @@ from __future__ import annotations
 
 from pathlib import Path
 
+from hotpocket_common.constants import App, Environment
+
 BASE_DIR = Path(__file__).resolve().parent.parent.parent
 
 DEBUG = False
 ALLOWED_HOSTS = []
 
-ENV = 'build'
-APP = 'backend'
+ENV = Environment('BUILD', 'build')
+APP = App.WEBAPP
 
 INSTALLED_APPS = [
     'django.contrib.auth',