Currently testing out Shiori. I have tried both it and Readeck on my Raspberry Pi 3B running 32-bit Raspbian ‘Bullseye’. From an installation and performance perspective, Shiori is easier: 32-bit binaries are available and its web interface is a bit more responsive. If you are not running a 64-bit version of the Raspberry Pi OS, you have to build Readeck yourself (which I successfully did).
The main attraction of Shiori over Readeck is that it has both a readable and archive view. The main downside for me is it lacks the read/unread feature of Readeck and Pocket (although that’s apparently something planned for future and in the meantime, it’s possible to workaround using tags).
Both have a browser extension to enable capturing pages that contain Javascript and do not gracefully degrade. Both also have an export-to-ebook function that may suit your e-reader.
Bottom line: if you have an RPi4 or later, then Readeck is probably want you want. If you’re running an older Pi, though, Shiori may be a better option.
I use Pi-hole, except that I originally retrofitted after setting up DNScrypt years ago to connect to Cisco OpenDNS. That’s not the only DNS server you can use with it, though, and it’s added more features since.
To use DNScrypt with Pi-hole on the same device, set DNScrypt to listen on 127.0.0.1:54 and point Pi-hole to that as the DNS server.
The only time I have ever had any trouble with this setup and DNS resolution is when the network is recovering from a power outage; there’s a race condition somewhere between the Pi and my modem/router that I’ve never found the time to pin down (given outages are so infrequent I just haven’t gotten around to it) and it’s easily resolved by rebooting the Pi.