How to create image with linuxserver dockerfile

Can you please explain me how to create image with linuxserver dockerfile?
I need to build arm32v7 images and I use modified dockerfile from linuxserver github (sonarr) but container is restarting all the time.

You’ll have to modify and locally build the baseimages as well for armhf compatibility.

It’s not something we provide support for as we deprecated armhf as a platform.