Blockchain//Besu//Config

- `config.toml` simplifies `docker run` commands — groups static settings in a file.

config.toml simplifies docker run commands — groups static settings in a file.

Contains: RPC settings, bootnodes, sync options, CORS configuration.

Parser is strict: a syntax error on one line can make Besu fail to recognize options on later lines.

rpc-http-cors-origins=["*"] allows any web page to call the RPC — convenient for dev, dangerous in production.