Function collect_seeds

fendermint/testing/materializer/src/docker/node.rs:637–648

Collect comma separated values from seeds nodes.

(seed_nodes: &[&DockerNode], f: F)

/// Collect comma separated values from seeds nodes.
fn collect_seeds<F>(seed_nodes: &[&DockerNode], f: F) -> anyhow::Result<String>
where
    F: Fn(&DockerNode) -> anyhow::Result<String>,
{
    let ss = seed_nodes
        .iter()
        .map(|n| f(n))
        .collect::<anyhow::Result<Vec<_>>>()
        .context("failed to collect seeds")?;

    Ok(ss.join(","))
}

fn export_env(file_path: impl AsRef<Path>, env: &EnvMap) -> anyhow::Result<()> {
    let env = env