Looks like a well implemented lightweight distribution. Recent kernel too, and 64bit support. This is the first 64bit OS for raspberry i used. One problem is the default disk-less mode is unseasoned. But it can also be installed as sys mode(disk) too. I have use sys mode serval days, and run docker...
I found that alpinelinux has provided a aarch64 OS for raspberry p 3 from version 3.8.0.
I have change all my raspberry from raspbain to alpinelinux.
It's smaller and easy to install and setting.
That's so wonderful for me.