feat: add builder

src/main.rs

@@ -1,14 +1,16 @@
 #[macro_use]
 extern crate rust_util;
 
+mod build_util;
 mod docker_util;
 
+use std::env;
 pub use docker_util::DockerCmd;
 
 fn main() {
     information!("dockerbuild v0.1");
 
-    let args_iter = std::env::args().skip(1);
+    let args_iter = env::args().skip(1);
     let args = args_iter.map(|a| a.to_owned()).collect::<Vec<_>>();
     DockerCmd::new("rust:1.47").exec(&args).unwrap();
 }