Hmm... It loaded just fine on my Nvidia Shield.
t3chskel
I tried setting up coturn with docker but I can't remember offhand what I had issues with. I am running a reverse proxy (Traefik) with wildcard certs. I should dig into it again. Do you happen to have any pointers or any good guides I could try following?
We use Matrix (Synapse) and it works extremely well. I just wish I could get a STUN/TURN server working...
I've been experimenting with Vikunja for this very purpose. It seems I can setup recurring tasks that when completed will automatically change their due date and uncheck themselves. It will send me emails when things are due and it appears to be able to send me overdue items as well. It doesn't currently support webhooks for notifications (I'm wanting to use Home Assistant notifications for this) but apparently it's on the road map. Give it a try, maybe it will work for you.
You can use HACS in Docker. I definitely had that working in Docker before I moved to Home Assistant OS on a dedicated machine. You're right about add-ons though, maybe you had the two confused?