修改一下dockerfile

Change-Id: I97dc4e96c197c7e217ce9a671a814488202c8612
diff --git a/Dockerfile b/Dockerfile
index 30091d9..875dd83 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,4 +18,4 @@
 EXPOSE 3004
 
 # 启动应用
-CMD ["npm", "run", "start"]    
\ No newline at end of file
+CMD ["npm", "run", "dev"]    
\ No newline at end of file