docker images
docker build --tag tagname .
docker ps
docker ps -a
docker rm tagname
docker rmi image
docker run -i -t -p 80:80 --name hello centos
docker stop hello
docker export -o fck hello
docker import ./fck ffck
docker run --rm -i -t -v /Users/hangj/GitHub/skynet:/skynet -p 8001:8001 -p 8888:8888 --name sn skynet:sn /bin/bash