Deploying ChimeIn
ChimeIn is available as an open source tool. It's a PHP/MySQL application which leverages VueJS for frontend rendering. It also relies on Redis and a Node based websocket tool called laravel-echo-server.
For authentication, ChimeIn is currently tied to SAML (Shibboleth) using a PHP library. It could easily be extended to support other authentication platforms though.
Running it yourself
We're planning to make a Docker package available for deploying ChimeIn, but that's not available at this time. We currently deploy ChimeIn with Ansible, and would be happy to share those playbooks.