Macro dockerfile_rs::ADD

macro_rules! ADD {
    (--chown=$user:ident:$group:ident $src:tt $dst:tt) => { ... };
    (--chown=$user:ident $src:tt $dst:tt) => { ... };
    ($src:tt $dst:tt) => { ... };
}

let add = ADD!("/var/run" "/home");
assert_eq!(add.to_string(), r#"ADD "/var/run" "/home""#);