sniproxy’s behaviour is controlled by a variety of environment variables. They are detailed here along with the default values.
Changing Environment Variables
Recreating is ok
Changing environment variables in docker requires you to delete and recreate your containers. Don't worry, your cache data is safely stored OUTSIDE in a volume and will be reused by the new containers
If you are using docker-compose these variables can be changed by editing the .env file provided. If a specific variable does not exist in your version of the .env just add a new line.
If you are using docker from the command line environment variables are specified using
-e VARIABLE=VALUE format when you launch the container.
The upstream DNS server(s) the cache should use. The defaults are Google DNS. Multiple upstream dns servers are allowed, separated by semi colons (or spaces). Do NOT point this at lancache-dns.