diff --git a/Docker外挂配置指南.md b/Docker外挂配置指南.md
index f92c1b7cd..932423ee6 100644
--- a/Docker外挂配置指南.md
+++ b/Docker外挂配置指南.md
@@ -27,7 +27,7 @@
 
 ### 1.3 镜像打包
 
-1. docker build -f installer/Dockerfile -t maxkb:latest .
+1. docker build -f installer/Dockerfile -t maxkb:latest
 
 ## 2. 数据库外挂配置