Firstly I want to say thank you for Cosmos!
I started selfhosting about six months ago and don't really have the time to invest in learning the networking and Docker ins and outs. I was especially stuck on reverse proxies and Docker backups. It just didn't click with me. With Cosmos I am starting to get an idea on the backup part.
I also don't want to expose anything to the WAN and that is where Cosmos excels for me. Most Docker tutorials and other PAAS/SAAS systems require a registered domain. I also have CGNAT ISP which complicates that, but not with Cosmos! I can keep everything walled off from the internet.
Sadly, Cosmos was the last one I tried, wish I had tried it first! I love supporting projects like this, financially because I don't have any knowledge to contribute.
So again, thank you for Cosmos! Now I'm off to figure out how to update Cosmos!