Fix ImageId retrieval (search from the end of the list of build-infos)

Relates to gesellix/docker-client#58
Relates to gesellix/gradle-docker-plugin#62

Author: gesellix

api-client/src/main/kotlin/de/gesellix/docker/remote/api/client/ImageApi.kt

@@ -270,19 +270,20 @@ class ImageApi(dockerClientConfig: DockerClientConfig = defaultClientConfig, pro
   }
 
   fun getImageId(buildInfos: List<BuildInfo>): ImageID? {
-    val firstAux = buildInfos.stream()
+    val reversedInfos = buildInfos.reversed()
+    val firstAux = reversedInfos.stream()
       .filter { (_, _, _, _, _, _, _, aux): BuildInfo -> aux != null }
       .findFirst()
     if (firstAux.isPresent) {
       return firstAux.get().aux
     } else {
-      val idFromStream = buildInfos.stream()
+      val idFromStream = reversedInfos.stream()
         .filter { (_, stream): BuildInfo -> stream?.contains("Successfully built ")!! }
         .findFirst()
       return if (idFromStream.isPresent) {
         ImageID(idFromStream.get().stream!!.removePrefix("Successfully built ").replaceAfter('\n', "").trim())
       } else {
-        val tagFromStream = buildInfos.stream()
+        val tagFromStream = reversedInfos.stream()
           .filter { (_, stream): BuildInfo -> stream?.contains("Successfully tagged ")!! }
           .findFirst()
         tagFromStream.map { (_, stream): BuildInfo ->

api-client/src/test/java/de/gesellix/docker/remote/api/client/ImageApiTest.java

@@ -24,6 +24,7 @@ public void setup() {
   public void getImageIdFromAux() {
     List<BuildInfo> infos = new ArrayList<>();
     infos.add(new BuildInfo(null, null, null, null, null, null, null, new ImageID("sha256:expected-id")));
+    infos.add(new BuildInfo(null, "Successfully built the wind\ncaught it", null, null, null, null, null, null));
     infos.add(new BuildInfo(null, "Successfully built f9d5f290d048\nfoo bar", null, null, null, null, null, null));
     infos.add(new BuildInfo(null, "Successfully tagged image:tag\nbar baz", null, null, null, null, null, null));
 
@@ -35,6 +36,7 @@ public void getImageIdFromAux() {
   @Test
   public void getImageIdFromStreamWithBuildMessage() {
     List<BuildInfo> infos = new ArrayList<>();
+    infos.add(new BuildInfo(null, "Successfully built the wind\ncaught it", null, null, null, null, null, null));
     infos.add(new BuildInfo(null, "Successfully built f9d5f290d048\nfoo bar", null, null, null, null, null, null));
     infos.add(new BuildInfo(null, "Successfully tagged image:tag\nbar baz", null, null, null, null, null, null));