mvn clean package
docker build -t spring-app:latest .
docker run --rm -it -p 8080:8080 spring-app:latest
docker tag spring-app:latest localhost:30500/spring-app:latest
docker push localhost:30500/spring-app:latest
docker tag spring-app:latest localhost:30500/spring-app:1.0.1
docker push localhost:30500/spring-app:1.0.1 
docker run --rm -it -p 8080:8080 localhost:30500/spring-app:1.0.1