Added MariaDB config for production use

nginx-conf/toolkit.conf

     location / {
         proxy_pass http://toolkit;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header Host $host;
+        proxy_set_header Host $http_host;
         proxy_redirect off;
     }
 

web/app/__init__.py

     # get config variables from OS environment variables: set in env file passed through Docker Compose
     app.config['SECRET_KEY'] = os.environ.get('SECRET_KEY')
     app.config['SQLALCHEMY_DATABASE_URI'] = os.environ.get('DATABASE_URL')
-    app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = 'False'
+    app.config['SQLALCHEMY_ECHO'] = False
+    app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
 
     db.init_app(app)
 

web/requirements.txt

 flask-login
 flask-moment
 gunicorn
+pymysql