podbox-guest 0.7.2

Guest-side daemon and entrypoint for podbox containers: socket protocol, interceptors, and idle shutdown.
Documentation 
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fn main() {
    let version = std::env::var("PODBOX_VERSION")
        .ok()
        .filter(|s| !s.is_empty())
        .or_else(git_describe)
        .unwrap_or_else(|| std::env::var("CARGO_PKG_VERSION").expect("CARGO_PKG_VERSION not set"));
    println!("cargo:rustc-env=PODBOX_VERSION={version}");
}

fn git_describe() -> Option<String> {
    let output = std::process::Command::new("git")
        .args(["describe", "--tags", "--always", "--dirty=-dirty"])
        .output()
        .ok()?;
    if output.status.success() {
        String::from_utf8(output.stdout)
            .ok()
            .map(|s| s.trim().to_string())
    } else {
        None
    }
}