feat: mirror can set to none, set to rust when confit is none

src/main.rs

@@ -14,7 +14,7 @@ pub use docker_util::DockerCmd;
 fn main() {
     information!("{} v{}", env!("CARGO_PKG_NAME"), env!("CARGO_PKG_VERSION"));
 
-    let docker_build_config = config::load_docker_build_config().expect("Read config failed, not found or parse error!");
+    let docker_build_config = config::load_docker_build_config_or_default();
 
     let mut args_iter = env::args().skip(1).peekable();
     let mut get_docker_image = || {
@@ -45,7 +45,9 @@ fn main() {
     let mut docker_cmd = DockerCmd::new(&docker_image);
     docker_cmd.add_volumn(&get_final_docker_registry(&docker_image), "/usr/local/cargo/registry");
     if let Some(mirror) = &crates_mirror.or(docker_build_config.mirror) {
-        docker_cmd.mirror(mirror);
+        if mirror.to_lowercase() != "none" {
+            docker_cmd.mirror(mirror);
+        }
     }
     docker_cmd.exec(&args).unwrap();
 }