Resolve "UI Bug Semicolon"

Closes #456

dbrepo-metadata-service/entities/src/main/java/at/tuwien/entities/container/image/ContainerImage.java

@@ -71,11 +71,11 @@ public class ContainerImage {
     private Instant lastModified;
 
     @ToString.Exclude
-    @OneToMany(fetch = FetchType.LAZY, mappedBy = "image")
+    @OneToMany(fetch = FetchType.LAZY, cascade = {CascadeType.ALL, CascadeType.PERSIST}, mappedBy = "image")
     private List<DataType> dataTypes;
 
     @ToString.Exclude
-    @OneToMany(fetch = FetchType.LAZY, mappedBy = "image")
+    @OneToMany(fetch = FetchType.LAZY, cascade = {CascadeType.ALL, CascadeType.PERSIST}, mappedBy = "image")
     private List<Operator> operators;
 
 }