diff --git a/.gitignore b/.gitignore
index ede2ada..c6d3e2d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,7 +2,8 @@
 # Generated by Cargo
 # will have compiled files and executables
 /target/
-linux_target/
+dockerbuild.json
+/target_*/
 
 # These are backup files generated by rustfmt
 **/*.rs.bk
diff --git a/Cargo.toml b/Cargo.toml
index 3afd30f..e377b2d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "dockerbuild"
-version = "0.1.3"
+version = "0.1.4"
 authors = ["Hatter Jiang <jht5945@gmail.com>"]
 edition = "2018"
 license = "MIT"
diff --git a/src/config.rs b/src/config.rs
index de79834..f29d948 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -3,9 +3,17 @@ use std::path::PathBuf;
 use serde::{Serialize, Deserialize};
 use rust_util::util_file;
 
-#[derive(Serialize, Deserialize)]
+#[derive(Debug, Serialize, Deserialize)]
+pub struct DockerBuildImage {
+    pub name: String,
+    pub image: String,
+    pub target_dir: Option<String>,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
 pub struct DockerBuildConfig {
     pub image: Option<String>,
+    pub images: Option<Vec<DockerBuildImage>>,
     pub mirror: Option<String>,
 }
 
@@ -13,6 +21,7 @@ pub fn load_docker_build_config_or_default() -> DockerBuildConfig {
     load_docker_build_config().unwrap_or_else(|| {
         DockerBuildConfig {
             image: Some("rust".into()),
+            images: None,
             mirror: None,
         }
     })
diff --git a/src/docker_util.rs b/src/docker_util.rs
index c7f13fa..e47f322 100644
--- a/src/docker_util.rs
+++ b/src/docker_util.rs
@@ -20,6 +20,7 @@ pub struct DockerCmd {
     volumns: Vec<(String, String)>,
     mirror: Option<String>,
     tty: bool,
+    builder_args: Vec<String>,
 }
 
 #[allow(dead_code)]
@@ -63,6 +64,11 @@ impl DockerCmd {
         self
     }
 
+    pub fn add_build_arg<T>(&mut self, arg: T) -> &mut Self where T: Into<String> {
+        self.builder_args.push(arg.into());
+        self
+    }
+
     pub fn exec(self, cmds: &[String]) -> XResult<()> {
         let mut cmd = Command::new(DOCKER_CMD);
         cmd.arg("run");
@@ -99,7 +105,7 @@ impl DockerCmd {
             success!("Build crates mirror: {}", mirror);
         }
 
-        let mut builder_cmd = builder_name;
+        let mut builder_cmd = builder_name.clone();
         let mut sub_build_cmd = vec![];
         let mut cmds_iter = cmds.iter();
         if let Some(cmd0) = cmds_iter.next() {
@@ -117,6 +123,12 @@ impl DockerCmd {
         final_sub_cmd.push_str(&builder_cmd);
         final_sub_cmd.push(' ');
         final_sub_cmd.push_str(&sub_build_cmd.iter().map(|arg| escape_arg(arg)).collect::<Vec<_>>().join(" "));
+        if !self.builder_args.is_empty() {
+            for build_arg in &self.builder_args {
+                final_sub_cmd.push(' ');
+                final_sub_cmd.push_str(build_arg);
+            }
+        }
         sub_cmd.push_str(&final_sub_cmd);
 
         fs::write(DCOLER_TEMP_CMD, &sub_cmd).ok();
diff --git a/src/main.rs b/src/main.rs
index 723788b..2b6ebd8 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -8,6 +8,8 @@ mod docker_util;
 use std::fs;
 use std::env;
 use std::path::{Path, PathBuf};
+use config::{DockerBuildConfig, DockerBuildImage};
+use fs::File;
 use rust_util::util_file;
 use docker_util::DockerCmd;
 
@@ -25,7 +27,65 @@ fn main() {
     let docker_build_config = config::load_docker_build_config_or_default();
 
     let mut args_iter = env::args().skip(1).peekable();
+
+    if args_iter.peek().map(|arg| vec!["--help", "-h", "::help"].contains(&&arg.as_str())).unwrap_or(false) {
+        println!("dockerbuild [::init]");
+        return;
+    }
+
+    if args_iter.peek().map(|arg| arg == "::init").unwrap_or(false) {
+        let docker_build_json = "dockerbuild.json";
+        if let Ok(_) = File::open(docker_build_json) {
+            failure!("File exists: {}", docker_build_json);
+            return;
+        }
+        let config = DockerBuildConfig{
+            image: None,
+            images: Some(vec![DockerBuildImage{
+                name: "linux_x64".into(),
+                image: "rust".into(),
+                target_dir: Some("target_linux_x64".into()),
+            }, DockerBuildImage{
+                name: "linux_x86".into(),
+                image: "i386/rust".into(),
+                target_dir: Some("target_linux_x86".into()),
+            }]),
+            mirror: Some("git://mirrors.ustc.edu.cn/crates.io-index".into()),
+        };
+        fs::write(
+            docker_build_json, 
+            serde_json::to_string_pretty(&config).expect("Generate file failed!")
+        ).expect("Write file failed!");
+        return;
+    }
+
+    let docker_build_image_opt = if let Some(first_arg) = args_iter.peek() {
+        if first_arg.starts_with(":name:") {
+            let name = first_arg[6..].to_string();
+            args_iter.next(); // skip ':name:*'
+            match &docker_build_config.images {
+                None => {
+                    failure!("Images is not configed: {}", &name);
+                    return;
+                },
+                Some(images) => {
+                    let docker_build_image = images.iter().find(|i| i.name == name);
+                    match docker_build_image {
+                        None => {
+                            failure!("Image name not found: {}", &name);
+                            return;
+                        },
+                        Some(docker_build_image) => Some(docker_build_image),
+                    }
+                },
+            }
+        } else { None }
+    } else { None };
+
     let mut get_docker_image = || {
+        if let Some(docker_build_image) = docker_build_image_opt {
+            return docker_build_image.image.to_string();
+        }
         if let Some(first_arg) = args_iter.peek() {
             if first_arg.starts_with(":image:") {
                 let image_name = first_arg[7..].to_string();
@@ -59,6 +119,12 @@ fn main() {
             docker_cmd.mirror(&Some(mirror));
         }
     }
+    if let Some(docker_build_image) = docker_build_image_opt {
+        if let Some(target_dir) = &docker_build_image.target_dir {
+            docker_cmd.add_build_arg("--target-dir");
+            docker_cmd.add_build_arg(target_dir);
+        }
+    }
     docker_cmd.exec(&args).unwrap();
 }