I found script which checks which kernel options are missing. I enabled almost all of them except few optional ones. Can you test this update:
libreelec-h3.arm-9.1-devel-20190309191047-37a2b75.tar
At this point I'm unsure if docker addon needs to be rebuild.
I guess kernel config is the main reason why experiment with using amlogic addons on allwinner images didn't work.