Make docker image testing locally easier

Author: breskeby

build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/docker/DockerBuildTask.java

@@ -222,11 +222,12 @@ public void execute() {
                 }
 
                 tags.forEach(tag -> spec.args("--tag", tag));
-
                 parameters.getBuildArgs().get().forEach((k, v) -> spec.args("--build-arg", k + "=" + v));
 
                 if (parameters.getPush().getOrElse(false)) {
                     spec.args("--push");
+                } else {
+                    spec.args("--load");
                 }
             });
 

build-tools/src/main/java/org/elasticsearch/gradle/Architecture.java

@@ -11,6 +11,8 @@
 
 /**
  * TODO We need to clean that up when other (binary) components have aligned on architecture namings
+ * I put all different names and nomenclatures here to have a central place to check when we adopt further
+ * ones ml and beats have been updated and bwc branches have been updated too.
  * */
 public enum Architecture {