Ncpi as dockerfile on Ubuntuserver

Nexcloudpi runs on X64 as Dockerfile (Ubuntuserver). I want to move the data to sda1. sda1 is not yet registered. How should the entry in the fstab read? otherwise the sda ​​cannot be found in the panel.

Can follow this guide;

Thanks for your fast answer. My actuell problem: I cannot open the ncp-panel this moment.
I’ll try seeking later. For now I start to Bach: Weihnachtsoratorium 1-3. My wife and me are singing in the Choir.

The NCP-panel has no option to use UUID and fstab, you have to use the terminal/ssh to use this method.