Simply running INITIALIZE=1 ./runme.sh then ./runme.sh will check for required tools, clone and build images and place results in images/ directory.
docker build -t lx2160a_uefi docker/ docker run -v "$PWD":/work:Z --rm -i -t lx2160a_uefi build
You can specify build variables with the -e option docker run -e SOC_SPEED=2200 -e BUS_SPEED=800 -e DDR_SPEED=3000 -e XMP_PROFILE=1 -v "$PWD":/work:Z --rm -i -t lx2160a_uefi build