Update spring-boot-gradle-plugin to use docker-test plugin

See gh-41228

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/build.gradle

@@ -3,6 +3,7 @@ plugins {
 	id "maven-publish"
 	id "org.asciidoctor.jvm.convert"
 	id "org.springframework.boot.conventions"
+	id "org.springframework.boot.docker-test"
 	id "org.springframework.boot.maven-repository"
 	id "org.springframework.boot.optional-dependencies"
 }
@@ -78,6 +79,14 @@ components.java.addVariantsFromConfiguration(configurations.modernGradleRuntimeE
 dependencies {
 	asciidoctorExtensions("io.spring.asciidoctor:spring-asciidoctor-extensions-section-ids")
 
+	dockerTestImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-gradle-test-support"))
+	dockerTestImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support"))
+	dockerTestImplementation(gradleTestKit())
+	dockerTestImplementation("org.assertj:assertj-core")
+	dockerTestImplementation("org.junit.jupiter:junit-jupiter")
+	dockerTestImplementation("org.testcontainers:junit-jupiter")
+	dockerTestImplementation("org.testcontainers:testcontainers")
+	
 	implementation(project(":spring-boot-project:spring-boot-tools:spring-boot-buildpack-platform"))
 	implementation(project(":spring-boot-project:spring-boot-tools:spring-boot-loader-tools"))
 	implementation("io.spring.gradle:dependency-management-plugin")
@@ -89,14 +98,12 @@ dependencies {
 		exclude(group: "commons-logging", module: "commons-logging")
 	}
 
-	testImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support"))
 	testImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-gradle-test-support"))
+	testImplementation(project(":spring-boot-project:spring-boot-tools:spring-boot-test-support"))
 	testImplementation("com.tngtech.archunit:archunit-junit5:0.22.0")
 	testImplementation("org.assertj:assertj-core")
 	testImplementation("org.junit.jupiter:junit-jupiter")
 	testImplementation("org.mockito:mockito-core")
-	testImplementation("org.testcontainers:junit-jupiter")
-	testImplementation("org.testcontainers:testcontainers")
 }
 
 gradlePlugin {