more coherent naming of db + container service

...-service/src/test/java/at/tuwien/service/ServiceTest.java

...ce/rest-service/src/test/resources/application.properties

fda-container-service/services/pom.xml

...services/src/main/java/at/tuwien/config/DockerConfig.java

...ce/services/src/main/java/at/tuwien/entity/Auditable.java

...ce/services/src/main/java/at/tuwien/entity/Container.java

...rvices/src/main/java/at/tuwien/entity/ContainerImage.java

...vices/src/main/java/at/tuwien/entity/EnvironmentItem.java

.../java/at/tuwien/exception/ContainerNotFoundException.java

...a/at/tuwien/exception/ContainerStillRunningException.java

.../main/java/at/tuwien/exception/DockerClientException.java

...java/at/tuwien/exception/ImageAlreadyExistsException.java

...main/java/at/tuwien/exception/ImageNotFoundException.java

...vices/src/main/java/at/tuwien/mapper/ContainerMapper.java

.../services/src/main/java/at/tuwien/mapper/ImageMapper.java

...c/main/java/at/tuwien/repository/ContainerRepository.java

...s/src/main/java/at/tuwien/repository/ImageRepository.java

...ces/src/main/java/at/tuwien/service/ContainerService.java

...ervices/src/main/java/at/tuwien/service/ImageService.java

fda-database-service/.gitignore