Try fix docker registry

tekton-pipeline/resources/build-task-cm.yaml

@@ -6,4 +6,4 @@ metadata:
 data:
   DOCKER_TAG: "1.0.0"
   DOCKER_IMAGE_NAME: hello-app
-  DOCKER_NAMESPACE: tekton-demo
+  DOCKER_NAMESPACE: vtimofei

tekton-pipeline/tasks/build-task.yaml

@@ -34,5 +34,5 @@ spec:
         - /kaniko/executor
       args:
         - --dockerfile=$(params.pathToContext)/$(params.pathToDockerFile)
-        - --destination=$(resources.outputs.image-registry.url)/$(DOCKER_IMAGE_NAME):$(DOCKER_TAG)
+        - --destination=$(resources.outputs.image-registry.url)/$(DOCKER_NAMESPACE)/$(DOCKER_IMAGE_NAME):$(DOCKER_TAG)
         - --context=$(params.pathToContext)

tekton-pipeline/triggers/trigger-template.yaml

@@ -37,7 +37,7 @@ spec:
       params:
       - name: url
         # Replace <docker_registry_name> with your docker registry name (e.g. my-acr.azurecr.io)
-        value: "https://hub.docker.com/u/vtimofei"
+        value: "registry.hub.docker.com"
       type: image
   - apiVersion: tekton.dev/v1alpha1
     kind: PipelineRun