Collabora code via docker vm WSS not working (owncloud 9.1)

Hello!

I have followed all the instructions to run the Collabora Code VM in docker. I am using CentOS 6.8 as my host system and the community version of owncloud 9.1. After extensive digging, I have found that there is a problem connecting to wss:// (Web Socket Secure) via Apache ProxyPass. I was wondering if anyone else here has had this issue?

Thanks!!