前段

Change-Id: I718d4d07ea03c6d2b6bcbd4d426c5d1af2201bf4
diff --git a/public/robots.txt b/public/robots.txt
new file mode 100644
index 0000000..e9e57dc
--- /dev/null
+++ b/public/robots.txt
@@ -0,0 +1,3 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow: