Heroku outrage free was 99.9999%+ over the past 60 days[1], I'd have a hard time achieving this with a single dedicated server.

[1] https://status.heroku.com/

Do you really mean that you never had a server with 60 days uptime ? This is really insignificant to achieve, even a reboot per month is nothing, 99.9% of uptime is enough for 99.9% of projects, and a monthly reboot does not even get you close to that service level.

I am not affiliated nor haven't tried CapRover (for special reason of: coding my own for my tastytastes), but I would bet any standard system administrator could get a 99.9% uptime after the second month of production without particular effort (unless they don't know underlying technologies ie. "what a container" "what http" "what is namespace" "what iptables" ...)

I have a raspberry pi running on my desk that has been running for 60 days sitting on my desk with no outages. I don't even have a battery backup!

Maybe I am just an exception but I have 100% availability on one dedicated server for the last 2 years.