macro_rules! docker_cmd {
($e:expr) => {{
let mut dc = Command::new("docker");
dc.arg("run")
.arg("--rm")
.arg("-m")
.arg("1.5g")
.arg("-v")
.arg(format!("{}:/src:ro", env::current_dir().unwrap().display()))
.arg(format!("enhancedsociety/{}", $e));
dc
}};
}