Create docker container
From ESS-WIKI
# Creating docker container
docker run -it --name dockerfile_test1 --privileged -v $(pwd):/home/adv/flexbuild_lsdk2012:rw wlsdk:18.04 /bin/bash
# you can build code in container as below:
cd /home/adv/flexbuild_lsdk2012/
source setup.env
flex-builder -i mkfw -m ls1046ardb -b sd
flex-builder -i mkrfs -a arm64
flex-builder -i mkbootpartition -a arm64