switched to environment variable for config file lookup

app/main.py

@@ -22,7 +22,7 @@ app.config['SECURITY_PASSWORD_HASH'] = 'pbkdf2_sha512'
 app.config['SECURITY_PASSWORD_SALT'] = 'xxxxxxxxxxxxxxxxxxxxxx'
 app.config['SECURITY_REGISTERABLE'] = True
 app.config['SECURITY_EMAIL_SENDER'] = 'pitstops@lusiardi.de'
-app.config.from_object('config.email')
+app.config.from_envvar('config')
 app.config.from_object(__name__)
 
 mail = Mail(app)