fix(gradle-plugin/k8s): Pick docker credentials from ~/.docker/config.json file (#2290)

Signed-off-by: Anurag Rajawat <[email protected]>

Author: anurag-rajawat

CHANGELOG.md

@@ -29,6 +29,7 @@ Usage:
 * Fix #2219: Kind/Filename mappings include optional apiVersion configuration
 * Fix #2224: Quarkus native base image read from properties (configurable)
 * Fix #2228: Quarkus native base image uses UBI 8.7
+* Fix #2290: JKube is not picking docker credentials from `~/.docker/config.json` file
 * Fix #2302 Bump Kubernetes Client version to 6.8.0
 
 ### 1.13.1 (2023-06-16)

gradle-plugin/kubernetes/src/main/java/org/eclipse/jkube/gradle/plugin/KubernetesExtension.java

@@ -604,7 +604,7 @@ public boolean getForcePullOrDefault() {
   }
 
   public String getRegistryOrDefault() {
-    return getOrDefaultString("jkube.docker.registry", this::getRegistry, "docker.io");
+    return getOrDefaultString("jkube.docker.registry", this::getRegistry, null);
   }
 
   public String getBuildRecreateOrDefault() {

gradle-plugin/kubernetes/src/test/java/org/eclipse/jkube/gradle/plugin/KubernetesExtensionPropertyTest.java

@@ -95,8 +95,8 @@ static Stream<Arguments> defaultValues() {
         arguments("getCertPathOrNull", null),
         arguments("getSkipMachineOrDefault", false),
         arguments("getForcePullOrDefault", false),
-        arguments("getRegistryOrDefault", "docker.io"),
-        arguments("getPullRegistryOrDefault", "docker.io"),
+        arguments("getRegistryOrDefault", null),
+        arguments("getPullRegistryOrDefault", null),
         arguments("getBuildSourceDirectoryOrDefault", "src/main/docker"),
         arguments("getBuildOutputDirectoryOrDefault", "build/docker"),
         arguments("getResourceSourceDirectoryOrDefault", BASE.toPath().resolve(Paths.get("src", "main", "jkube")).toFile()),