...If you wish to keep data between invocations, use docker-compose down. By default, anchoring to the blockchain is disabled (enableAnchoring: false). If you want to enable blockchain anchoring, you will need to the Bitcoin Core dependency to be running with a funded wallet so that it can pay the Bitcoin network transaction fees (either for testnet or real Bitcoin for mainnet). You can change any configuration by passing configuration values via environment variables. The keys of these environment variables are always the SCREAMING_SNAKE_CASE equivalent of the configuration options listed in the default configuration.