bugfix: used `755` for dashboard folder.
diff --git a/Makefile b/Makefile
index f829671..c763dde 100644
--- a/Makefile
+++ b/Makefile
@@ -99,7 +99,7 @@
 		cd apisix && \
 		git submodule update --init --recursive && \
 		cp -r dashboard/* /usr/local/apisix/dashboard
-	chmod -R 644 /usr/local/apisix/dashboard
+	chmod -R 755 /usr/local/apisix/dashboard
 
 	$(INSTALL) -d /usr/local/apisix/logs/
 	$(INSTALL) -d /usr/local/apisix/conf/cert