Fix konflux results (#762)

Author: OlivierCazade

.tekton/pipeline-ref.yaml

@@ -81,10 +81,10 @@ spec:
   results:
   - description: ""
     name: IMAGE_URL
-    value: $(tasks.build-container.results.IMAGE_URL)
+    value: $(tasks.build-image-index.results.IMAGE_URL)
   - description: ""
     name: IMAGE_DIGEST
-    value: $(tasks.build-container.results.IMAGE_DIGEST)
+    value: $(tasks.build-image-index.results.IMAGE_DIGEST)
   - description: ""
     name: CHAINS-GIT_URL
     value: $(tasks.clone-repository.results.url)
@@ -253,8 +253,6 @@ spec:
 
   - name: build-source-image
     params:
-    - name: BASE_IMAGES
-      value: $(tasks.build-image-index.results.IMAGE_URL)
     - name: BINARY_IMAGE
       value: $(params.output-image)
     - name: SOURCE_ARTIFACT