Fix ImageChange triggers not being set in DeploymentConfig when resou…

…rce fragments are used.

Ported PR from FMP fabric8io/fabric8-maven-plugin#1794

CHANGELOG.md

@@ -21,6 +21,8 @@ Usage:
 ./scripts/extract-changelog-for-version.sh 1.3.37 5
 ```
 ### 0.2.1-SNAPSHOT
+* Port [#1794](https://github.com/fabric8io/fabric8-maven-plugin/pull/1794): Fix ImageChange triggers not being set in DeploymentConfig when resource fragments are used.
+
 
 ### 0.2.0 (05-03-2020)
 * Fix #71: script to extract changelog information for notifications

jkube-kit/enricher/api/src/main/java/org/eclipse/jkube/maven/enricher/api/util/KubernetesResourceUtil.java

@@ -643,6 +643,8 @@ public static String mergePodSpec(PodSpecBuilder builder, PodSpec defaultPodSpec
     }
 
     public static String mergePodSpec(PodSpecBuilder builder, PodSpec defaultPodSpec, String defaultName, boolean sidecarEnabled) {
+        // The default application container name is needed by plugin in order
+        // to add ImageChange triggers in case of DeploymentConfig
         String defaultApplicationContainerName = null;
         List<Container> containers = builder.buildContainers();
         List<Container> defaultContainers = defaultPodSpec.getContainers();
@@ -673,6 +675,11 @@ public static String mergePodSpec(PodSpecBuilder builder, PodSpec defaultPodSpec
                             container = new Container();
                             containers.add(container);
                         }
+                        // If default container name is not set, add first found
+                        // container as default application container.
+                        if (defaultApplicationContainerName == null) {
+                            defaultApplicationContainerName = container.getName();
+                        }
                     }
 
                     mergeSimpleFields(container, defaultContainer);