Use Paketo tiny builder by default for JVM and native apps

Closes gh-40859

Author: scottfrederick

spring-boot-project/spring-boot-starters/spring-boot-starter-parent/build.gradle

@@ -267,7 +267,6 @@ publishing.publications.withType(MavenPublication) {
 									delegate.artifactId('spring-boot-maven-plugin')
 									configuration {
 										image {
-											delegate.builder("paketobuildpacks/builder-jammy-tiny:latest");
 											env {
 												delegate.BP_NATIVE_IMAGE("true")
 											}

spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/src/main/java/org/springframework/boot/buildpack/platform/build/BuildRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2023 the original author or authors.
+ * Copyright 2012-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -45,7 +45,7 @@
  */
 public class BuildRequest {
 
-	static final String DEFAULT_BUILDER_IMAGE_NAME = "paketobuildpacks/builder-jammy-base:latest";
+	static final String DEFAULT_BUILDER_IMAGE_NAME = "paketobuildpacks/builder-jammy-tiny:latest";
 
 	private static final ImageReference DEFAULT_BUILDER = ImageReference.of(DEFAULT_BUILDER_IMAGE_NAME);
 

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/antora/modules/gradle-plugin/pages/packaging-oci-image.adoc

@@ -119,7 +119,7 @@ The following table summarizes the available properties and their default values
 | `builder`
 | `--builder`
 | Name of the Builder image to use.
-| `paketobuildpacks/builder-jammy-base:latest` or `paketobuildpacks/builder-jammy-tiny:latest` when {url-native-build-tools-docs-gradle-plugin}[GraalVM Native Image plugin] is applied.
+| `paketobuildpacks/builder-jammy-tiny:latest`
 
 | `runImage`
 | `--runImage`
@@ -237,7 +237,10 @@ Application contents will also be in this location in the generated image.
 
 NOTE: The plugin detects the target Java compatibility of the project using the JavaPlugin's `targetCompatibility` property.
 When using the default Paketo builder and buildpacks, the plugin instructs the buildpacks to install the same Java version.
-You can override this behaviour as shown in the xref:packaging-oci-image.adoc#build-image.examples.builder-configuration[builder configuration] examples.
+You can override this behavior as shown in the xref:packaging-oci-image.adoc#build-image.examples.builder-configuration[builder configuration] examples.
+
+NOTE: The default builder `paketobuildpacks/builder-jammy-tiny:latest` does not include a shell.
+Applications that require a shell to run a start script, as might be the case when the {url-gradle-docs-application-plugin}[`application` plugin] has been applied to generate a distribution zip archive, should override the `builder` configuration to use one that includes a shell, such as `paketobuildpacks/builder-jammy-base:latest` or `paketobuildpacks/builder-jammy-full:latest`.
 
 
 

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/antora/modules/gradle-plugin/pages/reacting.adoc

@@ -89,6 +89,6 @@ When the {url-native-build-tools-docs-gradle-plugin}[GraalVM Native Image plugin
 . Configures the GraalVM extension to disable Toolchain detection.
 . Configures each GraalVM native binary to require GraalVM 22.3 or later.
 . Configures the `bootJar` task to include the reachability metadata produced by the `collectReachabilityMetadata` task in its jar.
-. Configures the `bootBuildImage` task to use `paketobuildpacks/builder-jammy-tiny:latest` as its builder and to set `BP_NATIVE_IMAGE` to `true` in its environment.
+. Configures the `bootBuildImage` task to set `BP_NATIVE_IMAGE` to `true` in its environment.
 
 

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/main/java/org/springframework/boot/gradle/plugin/NativeImagePluginAction.java

@@ -105,10 +105,7 @@ private void copyReachabilityMetadataToBootJar(Project project) {
 	private void configureBootBuildImageToProduceANativeImage(Project project) {
 		project.getTasks()
 			.named(SpringBootPlugin.BOOT_BUILD_IMAGE_TASK_NAME, BootBuildImage.class)
-			.configure((bootBuildImage) -> {
-				bootBuildImage.getBuilder().convention("paketobuildpacks/builder-jammy-tiny:latest");
-				bootBuildImage.getEnvironment().put("BP_NATIVE_IMAGE", "true");
-			});
+			.configure((bootBuildImage) -> bootBuildImage.getEnvironment().put("BP_NATIVE_IMAGE", "true"));
 	}
 
 	private void configureJarManifestNativeAttribute(Project project) {

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/plugin/NativeImagePluginActionIntegrationTests.java

@@ -92,8 +92,7 @@ void reachabilityMetadataConfigurationFilesFromFileRepositoryAreCopiedToJar() th
 	void bootBuildImageIsConfiguredToBuildANativeImage() {
 		writeDummySpringApplicationAotProcessorMainClass();
 		BuildResult result = this.gradleBuild.build("bootBuildImageConfiguration");
-		assertThat(result.getOutput()).contains("paketobuildpacks/builder-jammy-tiny")
-			.contains("BP_NATIVE_IMAGE = true");
+		assertThat(result.getOutput()).contains("BP_NATIVE_IMAGE = true");
 	}
 
 	@TestTemplate

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/tasks/bundling/BootBuildImageTests.java

@@ -173,7 +173,7 @@ void whenUsingDefaultConfigurationThenRequestHasPublishDisabled() {
 	@Test
 	void whenNoBuilderIsConfiguredThenRequestHasDefaultBuilder() {
 		assertThat(this.buildImage.createRequest().getBuilder().getName())
-			.isEqualTo("paketobuildpacks/builder-jammy-base");
+			.isEqualTo("paketobuildpacks/builder-jammy-tiny");
 	}
 
 	@Test

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/plugin/NativeImagePluginActionIntegrationTests-bootBuildImageIsConfiguredToBuildANativeImage.gradle

@@ -7,7 +7,6 @@ apply plugin: 'org.graalvm.buildtools.native'
 
 task('bootBuildImageConfiguration') {
 	doFirst {
-		println "builder = ${tasks.getByName('bootBuildImage').builder.get()}"
 		println "BP_NATIVE_IMAGE = ${tasks.getByName('bootBuildImage').environment.get()['BP_NATIVE_IMAGE']}"
 	}
 }

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/docs/antora/modules/maven-plugin/pages/build-image.adoc

@@ -135,7 +135,7 @@ The following table summarizes the available parameters and their default values
 | `builder` +
 (`spring-boot.build-image.builder`)
 | Name of the Builder image to use.
-| `paketobuildpacks/builder-jammy-base:latest`
+| `paketobuildpacks/builder-jammy-tiny:latest`
 
 | `runImage` +
 (`spring-boot.build-image.runImage`)

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

@@ -69,7 +69,7 @@ void getBuildRequestWhenNameIsSetUsesName() {
 	void getBuildRequestWhenNoCustomizationsUsesDefaults() {
 		BuildRequest request = new Image().getBuildRequest(createArtifact(), mockApplicationContent());
 		assertThat(request.getName()).hasToString("docker.io/library/my-app:0.0.1-SNAPSHOT");
-		assertThat(request.getBuilder().toString()).contains("paketobuildpacks/builder-jammy-base");
+		assertThat(request.getBuilder().toString()).contains("paketobuildpacks/builder-jammy-tiny");
 		assertThat(request.getRunImage()).isNull();
 		assertThat(request.getEnv()).isEmpty();
 		assertThat(request.isCleanCache()).isFalse();