I like synology NAS units with Intel chips for hosting docker containers, alongside lots of network storage. They aren’t the cheapest solution but they are robust devices and i have had basically no problems since setting mine up in 2019.
Of course you can get a used dell server blade for a lot less which will be more powerful but it doesnt meet your small form factor requirement.
I haven’t been able to figure this out either, my dashboard is just links to my other containers with no obvious way to get at the juicy stats.