Merge pull request #43424 from vonZeppelin

* pr/43424:
  Polish "Only set imagePlatform if it has text"
  Only set imagePlatform if it has text

Closes gh-43424

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/main/java/org/springframework/boot/maven/Image.java

@@ -257,7 +257,7 @@ public class Image {
 		if (StringUtils.hasText(this.runImage)) {
 			request = request.withRunImage(ImageReference.of(this.runImage));
 		}
-		if (this.env != null && !this.env.isEmpty()) {
+		if (!CollectionUtils.isEmpty(this.env)) {
 			request = request.withEnv(this.env);
 		}
 		if (this.cleanCache != null) {
@@ -298,7 +298,7 @@ public class Image {
 		if (this.securityOptions != null) {
 			request = request.withSecurityOptions(this.securityOptions);
 		}
-		if (this.imagePlatform != null) {
+		if (StringUtils.hasText(this.imagePlatform)) {
 			request = request.withImagePlatform(this.imagePlatform);
 		}
 		return request;

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/test/java/org/springframework/boot/maven/ImageTests.java

@@ -49,6 +49,7 @@ import static org.assertj.core.api.Assertions.entry;
  * @author Scott Frederick
  * @author Jeroen Meijer
  * @author Rafael Ceccone
+ * @author Moritz Halbritter
  */
 class ImageTests {
 
@@ -290,6 +291,14 @@ class ImageTests {
 		assertThat(request.getImagePlatform()).isEqualTo(ImagePlatform.of("linux/arm64"));
 	}
 
+	@Test
+	void getBuildRequestWhenImagePlatformIsEmptyDoesntSetImagePlatform() {
+		Image image = new Image();
+		image.imagePlatform = "";
+		BuildRequest request = image.getBuildRequest(createArtifact(), mockApplicationContent());
+		assertThat(request.getImagePlatform()).isNull();
+	}
+
 	private Artifact createArtifact() {
 		return new DefaultArtifact("com.example", "my-app", VersionRange.createFromVersion("0.0.1-SNAPSHOT"), "compile",
 				"jar", null, new DefaultArtifactHandler());