EPMDEDP-17203: fix: default image.registry to empty so CD deploys resolve the full repository path

The docker.io default was prepended to the ECR path injected by the CD pipeline, producing an
unresolvable image reference. An empty registry matches the convention of other KRCI charts and
still pulls from Docker Hub for standalone installs.

Signed-off-by: Sergiy Kulanov <sergiy_kulanov@epam.com>

Author: SergK

deploy-templates/README.md

@@ -147,7 +147,7 @@ This project is licensed under the [Apache License 2.0](LICENSE.txt).
 | annotations | object | `{}` | Annotations to add to the deployment |
 | extraVolumeMounts | list | `[]` | Additional volume mounts to add to the manager container |
 | extraVolumes | list | `[]` | Additional volumes to add to the manager pod |
-| image.registry | string | `"docker.io"` | tekton-pipeline-queue image registry |
+| image.registry | string | `""` | tekton-pipeline-queue image registry. Leave empty to use the repository as-is (Docker Hub by default) |
 | image.repository | string | `"epamedp/tekton-pipeline-queue"` | tekton-pipeline-queue Docker image name. The released image can be found on [Dockerhub](https://hub.docker.com/r/epamedp/tekton-pipeline-queue) |
 | image.tag | string | `nil` | tekton-pipeline-queue Docker image tag. The released image can be found on [Dockerhub](https://hub.docker.com/r/epamedp/tekton-pipeline-queue). If not defined then .Chart.AppVersion is used |
 | imagePullPolicy | string | `"IfNotPresent"` | Image pull policy |

deploy-templates/values.yaml

@@ -14,8 +14,8 @@ tolerations: []
 affinity: {}
 
 image:
-  # -- tekton-pipeline-queue image registry
-  registry: docker.io
+  # -- tekton-pipeline-queue image registry. Leave empty to use the repository as-is (Docker Hub by default)
+  registry: ""
   # -- tekton-pipeline-queue Docker image name. The released image can be found on [Dockerhub](https://hub.docker.com/r/epamedp/tekton-pipeline-queue)
   repository: epamedp/tekton-pipeline-queue
   # -- tekton-pipeline-queue Docker image tag. The released image can be found on [Dockerhub](https://hub.docker.com/r/epamedp/tekton-pipeline-queue). If not defined then .Chart.AppVersion is used