Fix update process (#3341)

Author: tremor021

ct/revealjs.sh

@@ -40,12 +40,11 @@ function update_script() {
         tar zxf $temp_file
         rm -rf /opt/revealjs/node_modules/*
         cp /opt/revealjs/index.html  /opt
-        cp /opt/revealjs/gulpfile.js /opt
         cp -rf reveal.js-${RELEASE}/* /opt/revealjs
         cd /opt/revealjs
         $STD npm install
         cp -f /opt/index.html /opt/revealjs
-        cp -f /opt/gulpfile.js /opt/revealjs
+        sed -i '25s/localhost/0.0.0.0/g' /opt/revealjs/gulpfile.js
         echo "${RELEASE}" >/opt/${APP}_version.txt
         msg_ok "Updated $APP to ${RELEASE}"