Do not run `yarn` (npm install) inside docker. leave it to users

bin/entrypoint.sh

@@ -112,7 +112,14 @@ function wechaty::runBot() {
 
   [ -f package.json ] && {
     echo "Install dependencies modules ..."
-    yarn < /dev/null || return $? # yarn will close stdin??? cause `read` command fail after yarn
+
+    #
+    # NPM module install will have problem in China.
+    # i.e. chromedriver need to visit a google host to download binarys.
+    #
+    echo "Skipped yarn. Please make sure you had installed all the NPM modules which is depended by your bot script."
+    # yarn < /dev/null || return $? # yarn will close stdin??? cause `read` command fail after yarn
+
   }
 
   # echo -n "Linking Wechaty module to bot ... "