git clone --recurse-submodules https://github.com/sakoram/openwrt-build.git
cd openwrt-build
docker build -t openwrt .
docker run -v $(pwd)/openwrt:/home/openwrt -it openwrt /bin/bash
scripts/feeds update -a
scripts/feeds install -a
make menuconfig
make -j4
set Target System to Broadcom BCM27xx and Subtarget to BCM2710