unset DOCKER_HOST

cd node
docker build -t docker.alphabets.cn/node:4.4.7 4.4.7
docker build -t docker.alphabets.cn/node:4.5.0 4.5.0

cd ..
docker build -t docker.alphabets.cn/lightpy:0.0.2 0.0.2

export DOCKER_HOST=tcp://127.0.0.1:4000