diff --git a/Service%EF%BC%9ACoder.md b/Service%EF%BC%9ACoder.md
index ee6d417..478a1fd 100644
--- a/Service%EF%BC%9ACoder.md
+++ b/Service%EF%BC%9ACoder.md
@@ -1,9 +1,21 @@
+# 新增使用者
+
+```bash
+adduser coder && usermod -aG sudo coder && su - coder
+```
+
 # 安裝 Coder
 
 ```bash
 curl -L https://coder.com/install.sh | sh
 ```
 
+# 修改 Coder 綁定的位址
+
+```bash
+echo 'export CODER_HTTP_ADDRESS=0.0.0.0:3000' >> ~/.bashrc && source ~/.bashrc
+```
+
 # 啟動 Coder 服務
 
 ```bash