Ubuntu 20.04.2 on Digital Ocean; MIAB has been running fine but I can't upgrade

[stylnchris]

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More power to Mail-in-a-box (fork showcase)

I have came across Mail-in-a-Box for a while since I have got ahold of two domain names (I don’t want to stick to my @gmail.com forever, plus it’s very awkward to spell davness to a bank clerk or anything similar). But as a developer, I don’t want to just host mail. Sure, other solutions exist, but MIAB is by far the easiest to get going. Of course, though, as someone who wants the most power per buck (or we can say, the most bang per VM as per the Clown Computing Initiative), I want to host a…

But the official version of MiaB runs only on 18.0X.X LTS