Function run_contracts_node 

pub async fn run_contracts_node(
    binary_path: PathBuf,
    output: Option<&File>,
    port: u16,
) -> Result<Child, Error>

Runs the latest version of the substrate-contracts-node in the background.

Arguments

• binary_path - The path where the binary is stored. Can be the binary name itself if in PATH.
• output - The optional log file for node output.
• port - The WebSocket port on which the node will listen for connections.