dockerize project

docker-compose.yaml

sth-backend/Dockerfile

sth-backend/mvnw

sth-backend/pom.xml

...rc/main/java/hdm/mi/sthbackend/SthBackendApplication.java

...backend/src/main/java/hdm/mi/sthbackend/model/IMatch.java

...nd/src/main/java/hdm/mi/sthbackend/model/ITournament.java

sth-frontend/Dockerfile