https://dzone.com/articles/a-dockerfile-for-maven-based-github-projects https://docs.docker.com/docker-cloud/builds/push-images/ https://hub.docker.com/_/maven/
docker build -t imagebuildinginprocess .
docker run -ti imagebuildinginprocess
docker login (https://hub.docker.com/)
docker tag imagebuildinginprocess myminseok/java8_git_mvn:v2
docker push myminseok/java8_git_mvn:v2