diff --git a/src/error.rs b/src/error.rs
index 51eeb6f..843bc91 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -21,7 +21,7 @@ impl Display for RockerError {
             Self::IoError(e) => write!(f, "{}", e),
             Self::OtherError(s) => write!(f, "{}", s),
             Self::ErrnoError(e) => write!(f, "{}", e),
-            Self::TomlSerError(e) => write!(f, "{}", e)
+            Self::TomlSerError(e) => write!(f, "{}", e),
             Self::TomlDeError(e) => write!(f, "{}", e)
         }
     }
diff --git a/src/main.rs b/src/main.rs
index f6d1b27..9408542 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -227,7 +227,7 @@ fn run_container(cmd: &String, wait:bool, log:bool, volume_path: &PathBuf) -> Re
     }
 
     // 初始化容器工作目录
-    let _container_id = uuid::Uuid::new_v4().to_string();
+    let _container_id = uuid::Uuid::new_v4().to_string()[0..8].to_string();
     let container_work_path = Path::new(WORKSPACE).join("containers").join(&_container_id);
     let container_upper_path = container_work_path.join("upper");
     let container_merged_path = container_work_path.join("merged");
@@ -290,8 +290,8 @@ struct ContainerInfo {
     id: String,
     run: String,
     image: String,
-    volume: Option<String>,
-    env: Option<String>,
+    volume: String,
+    env: String,
 }
 
 fn save_container_info(args: &RockerArgs, container_id: &String) -> Result<()> {
@@ -300,8 +300,8 @@ fn save_container_info(args: &RockerArgs, container_id: &String) -> Result<()> {
         id: container_id.clone(),
         run: args.run.as_ref().unwrap().clone(),
         image: args.image.as_ref().unwrap().clone(),
-        volume: None,
-        env: None
+        volume: "".to_string(),
+        env: "".to_string()
     };
     let toml_str = toml::to_string(&container_info)?;
     fs::write(container_info_path, toml_str)?;
@@ -312,13 +312,13 @@ fn save_container_info(args: &RockerArgs, container_id: &String) -> Result<()> {
 fn show_containers() -> Result<()> {
     let containers_path = Path::new(WORKSPACE).join("containers");
     
-    println!("{}{}{}{}{}", "id", "image", "run", "volume", "env");
+    println!("{:<20}{:<20}{:<20}{:<20}{:<20}", "id", "image", "run", "volume", "env");
     for entry in fs::read_dir(containers_path)? {
         let path = entry?.path();
         let info_path = path.join("info.toml");
         let info_str = fs::read_to_string(info_path)?;
         let container_info: ContainerInfo = toml::from_str(&info_str)?;
-        println!("{}{}{}{:?}{:?}", container_info.id, container_info.image, container_info.run, container_info.volume, container_info.env);
+        println!("{:<20}{:<20}{:<20}{:<20}{:<20}", container_info.id, container_info.image, container_info.run, &container_info.volume[0..20], &container_info.env[0..20]);
     }
     Ok(())
 }