explicitly set the target type for trivy (#880)

Author: northdpole

components/scanners/trivy/internal/transformer/transformer.go

@@ -167,6 +167,7 @@ func (g *trivyTransformer) AddMetadataToDatasources(ctx context.Context, finding
 			if err := protojson.Unmarshal([]byte(source), &dataSource); err != nil {
 				return nil, errors.Errorf("could not unmarshal datasource %s, err:%w", source, err)
 			}
+			dataSource.TargetType = ocsffindinginfo.DataSource_TARGET_TYPE_CONTAINER_IMAGE
 			dataSource.SourceCodeMetadata = targetMetadata.SourceCodeMetadata
 			dataSource.OciPackageMetadata = targetMetadata.OciPackageMetadata
 			metadataSource, err := protojson.Marshal(&dataSource)

components/scanners/trivy/internal/transformer/transformer_test.go

@@ -175,7 +175,7 @@ func TestTrivyTransformer_Transform(t *testing.T) {
 			)
 			assert.Equalf(
 				t,
-				ocsffindinginfo.DataSource_TARGET_TYPE_UNSPECIFIED,
+				ocsffindinginfo.DataSource_TARGET_TYPE_CONTAINER_IMAGE,
 				dataSource.TargetType,
 				"Unexpected data source target type for finding %d",
 				idx,