add htaccess.sh

build/htaccess.sh

+#!/bin/bash
+
+cd $1
+
+OUT=.htaccess
+echo "ErrorDocument 404 https://zh.gluon.ai/404.html" >$OUT
+echo "RewriteEngine On" >>$OUT
+echo "RewriteCond %{SERVER_PORT} 80" >>$OUT
+echo "RewriteRule ^(.*)$ https://zh.gluon.ai/$1 [R,L]" >>$OUT
+for f in chapter*/*; do
+    echo "Redirect /$f /$(basename $f)" >>$OUT
+done