change session name for multiple shops

shop.py

@@ -21,6 +21,7 @@ CODEFINDER = re.compile(r'\`([^\`]+)\`')
 # create our little application :)
 app = Flask(__name__)
 app.config.from_object(__name__)
+app.config['SESSION_COOKIE_NAME'] = os.getenv('SESSION_COOKIE_NAME', 'mdshop')
 app.wsgi_app = ReverseProxied(app.wsgi_app) 
 
 def connect_db():