Enable LoaderIntegrationTests on aarch64

Closes gh-37654

Author: philwebb

spring-boot-tests/spring-boot-integration-tests/spring-boot-loader-tests/src/intTest/java/org/springframework/boot/loader/LoaderIntegrationTests.java

@@ -23,7 +23,6 @@
 import java.util.function.Supplier;
 import java.util.stream.Stream;
 
-import org.junit.jupiter.api.condition.OS;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.MethodSource;
 import org.testcontainers.containers.GenericContainer;
@@ -34,7 +33,6 @@
 import org.testcontainers.utility.MountableFile;
 
 import org.springframework.boot.system.JavaVersion;
-import org.springframework.boot.testsupport.junit.DisabledOnOs;
 import org.springframework.boot.testsupport.testcontainers.DisabledIfDockerUnavailable;
 import org.springframework.util.Assert;
 
@@ -46,8 +44,6 @@
  * @author Phillip Webb
  */
 @DisabledIfDockerUnavailable
-@DisabledOnOs(os = { OS.LINUX, OS.MAC }, architecture = "aarch64",
-		disabledReason = "Not all docker images have ARM support")
 class LoaderIntegrationTests {
 
 	private final ToStringConsumer output = new ToStringConsumer();
@@ -124,8 +120,10 @@ static JavaRuntime openJdk(JavaVersion version) {
 		}
 
 		static JavaRuntime oracleJdk17() {
+			String arch = System.getProperty("os.arch");
+			String dockerFile = ("aarch64".equals(arch)) ? "Dockerfile-aarch64" : "Dockerfile";
 			ImageFromDockerfile image = new ImageFromDockerfile("spring-boot-loader/oracle-jdk-17")
-				.withFileFromFile("Dockerfile", new File("src/intTest/resources/conf/oracle-jdk-17/Dockerfile"));
+				.withFileFromFile("Dockerfile", new File("src/intTest/resources/conf/oracle-jdk-17/" + dockerFile));
 			return new JavaRuntime("Oracle JDK 17", JavaVersion.SEVENTEEN, () -> new GenericContainer<>(image));
 		}
 

spring-boot-tests/spring-boot-integration-tests/spring-boot-loader-tests/src/intTest/resources/conf/oracle-jdk-17/Dockerfile-aarch64

@@ -0,0 +1,8 @@
+FROM ubuntu:jammy-20230624
+RUN apt-get update && \
+    apt-get install -y software-properties-common curl && \
+    mkdir -p /opt/oraclejdk && \
+    cd /opt/oraclejdk && \
+    curl -L https://download.oracle.com/java/17/archive/jdk-17.0.8_linux-aarch64_bin.tar.gz | tar zx --strip-components=1
+ENV JAVA_HOME /opt/oraclejdk
+ENV PATH $JAVA_HOME/bin:$PATH