Merge branch '3.1.x'

Closes gh-37194

spring-boot-project/spring-boot-testcontainers/src/main/java/org/springframework/boot/testcontainers/service/connection/ContainerConnectionSource.java

@@ -56,7 +56,7 @@ public final class ContainerConnectionSource<C extends Container<?>> implements
 
 	private final Set<Class<?>> connectionDetailsTypes;
 
-	private Supplier<C> containerSupplier;
+	private final Supplier<C> containerSupplier;
 
 	ContainerConnectionSource(String beanNameSuffix, Origin origin, Class<C> containerType, String containerImageName,
 			MergedAnnotation<ServiceConnection> annotation, Supplier<C> containerSupplier) {

spring-boot-project/spring-boot-testcontainers/src/main/java/org/springframework/boot/testcontainers/service/connection/ServiceConnectionContextCustomizerFactory.java

@@ -74,8 +74,12 @@ class ServiceConnectionContextCustomizerFactory implements ContextCustomizerFact
 				field.getDeclaringClass().getName(), Container.class.getName()));
 		Class<C> containerType = (Class<C>) fieldValue.getClass();
 		C container = (C) fieldValue;
-		return new ContainerConnectionSource<>("test", origin, containerType, container.getDockerImageName(),
-				annotation, () -> container);
+		// container.getDockerImageName() fails if there is no running docker environment
+		// When running tests that doesn't matter, but running AOT processing should be
+		// possible without a Docker environment
+		String dockerImageName = isAotProcessingInProgress() ? null : container.getDockerImageName();
+		return new ContainerConnectionSource<>("test", origin, containerType, dockerImageName, annotation,
+				() -> container);
 	}
 
 	private Object getFieldValue(Field field) {
@@ -83,4 +87,8 @@ class ServiceConnectionContextCustomizerFactory implements ContextCustomizerFact
 		return ReflectionUtils.getField(field, null);
 	}
 
+	private boolean isAotProcessingInProgress() {
+		return Boolean.getBoolean("spring.aot.processing");
+	}
+
 }