ci: Add coredns branch to build images

Temporarily adding the coredns branch to the build images workflow and
setting the default IMG variable to
quay.io/kuadrant/dns-operator:coredns.

DO NOT MERGE

Signed-off-by: Michael Nairn <[email protected]>

Author: mikenairn

bundle/manifests/dns-operator.clusterserviceversion.yaml

@@ -57,8 +57,8 @@ metadata:
       ]
     capabilities: Basic Install
     categories: Integration & Delivery
-    containerImage: quay.io/kuadrant/dns-operator:latest
-    createdAt: "2025-01-21T22:21:25Z"
+    containerImage: quay.io/kuadrant/dns-operator:coredns
+    createdAt: "2025-02-24T11:02:40Z"
     description: A Kubernetes Operator to manage the lifecycle of DNS resources
     operators.operatorframework.io/builder: operator-sdk-v1.33.0
     operators.operatorframework.io/project_layout: go.kubebuilder.io/v4
@@ -182,7 +182,7 @@ spec:
                 - /manager
                 env:
                 - name: WATCH_NAMESPACES
-                image: quay.io/kuadrant/dns-operator:latest
+                image: quay.io/kuadrant/dns-operator:coredns
                 livenessProbe:
                   httpGet:
                     path: /healthz

config/manager/kustomization.yaml

@@ -7,4 +7,4 @@ kind: Kustomization
 images:
 - name: controller
   newName: quay.io/kuadrant/dns-operator
-  newTag: latest
+  newTag: coredns

config/manifests/bases/dns-operator.clusterserviceversion.yaml

@@ -5,7 +5,7 @@ metadata:
     alm-examples: '[]'
     capabilities: Basic Install
     categories: Integration & Delivery
-    containerImage: quay.io/kuadrant/dns-operator:latest
+    containerImage: quay.io/kuadrant/dns-operator:coredns
     description: A Kubernetes Operator to manage the lifecycle of DNS resources
     repository: https://github.com/kuadrant/dns-operator
     support: kuadrant

make/release.mk

@@ -0,0 +1,3 @@
+# Temporarily change default IMG for the coredns branch
+# DO NOT MERGE
+IMG=quay.io/kuadrant/dns-operator:coredns