proper check for non-empty index.html

install-caddy

@@ -320,7 +320,7 @@ CADDY_EOF
   $sudo_cmd chmod 755 $PREFIX/srv/www
   $sudo_cmd chmod 755 $PREFIX/srv/www/localhost
 
-  if [ ! -f "$PREFIX/srv/www/localhost/index.html" ] || [ -z "$(cat $PREFIX/srv/www/localhost)" ]; then
+  if [ ! -f "$PREFIX/srv/www/localhost/index.html" ] || [ -z "$(cat $PREFIX/srv/www/localhost/index.html)" ]; then
     $http_get $http_opts "$caddy_localhost_index" $http_out $PREFIX/tmp/$caddy_dir/index.html
     $sudo_cmd mv $PREFIX/tmp/$caddy_dir/index.html $PREFIX/srv/www/localhost/
     $sudo_cmd chown -R $caddy_user:$caddy_group $PREFIX/srv/www/localhost/