Etherpad-lite not available after update


in case someone runs into the same problem:

I updated Etherpad on my UCS 4.4-8 instance to the version release a few weeks ago - a major update with big usability enhancements!

In my environment the new version wasn’t available. The internal IP address of the docker container in /etc/apache2/ucs-sites.conf.d/etherpad-lite-app.conf was wrong, it was (which in my case is the IP of one of the UCS Dashboard containers). I had to change it manually to (I found the correct one in UCR variable appcenter/apps/etherpad-lite/ip). After reloading apache (service apache2 reload) etherpad is available again.