2021
AwesomeOpenSource - Matrix / Synapse: Open Source, Self Hosted, Federated, End to End encrypted communication server 30:00 of 48:24
    https://www.youtube.com/watch?v=H-6kfIqPoI4
    https://shownotes.opensourceisawesome.com/matrix-server-install-via-docker/
    ! don't inst client and server on the same host