Merge branch 'dev/4.0.1' of github.com:AgoraIO/API-Examples into dev/4.0.1

Author: zhaoyongqiang

.github/ci/build/build_ios.sh

@@ -1,3 +1,4 @@
+#!/bin/bash -ilex
 ##################################
 # --- Guidelines: ---
 #
@@ -65,7 +66,7 @@ rm ./$unzip_name/package_size_report.txt
 mkdir ./$unzip_name/samples
 mkdir ./$unzip_name/samples/API-Example
 cp -rf ./iOS/** ./$unzip_name/samples/API-Example
-if [[ ./$unzip_name =~ "VOICE" ]]
+if [ -z `echo ${sdk_url} | grep 'audio'` ]
 then
     	echo "包含"
 	rm -rf ./$unzip_name/samples/API-Example/APIExample