diff --git a/src/test/java/io/kokuwa/keycloak/metrics/junit/KeycloakExtension.java b/src/test/java/io/kokuwa/keycloak/metrics/junit/KeycloakExtension.java
index d50d7c2..5c0b3a3 100644
--- a/src/test/java/io/kokuwa/keycloak/metrics/junit/KeycloakExtension.java
+++ b/src/test/java/io/kokuwa/keycloak/metrics/junit/KeycloakExtension.java
@@ -79,6 +79,15 @@ public class KeycloakExtension implements BeforeAllCallback, ParameterResolver {
 		// create client for keycloak container
 
 		var url = "http://" + container.getHost() + ":" + container.getMappedPort(8080);
+		System.out.println(container.getHost());
+		System.out.println(container.getHost());
+		System.out.println(container.getHost());
+		System.out.println(container.getTestHostIpAddress());
+		System.out.println(container.getTestHostIpAddress());
+		System.out.println(container.getTestHostIpAddress());
+		System.out.println(container.getExtraHosts());
+		System.out.println(container.getExtraHosts());
+		System.out.println(container.getExtraHosts());
 		var keycloak = Keycloak.getInstance(url, "master", "admin", "password", "admin-cli");
 		assertEquals(version, keycloak.serverInfo().getInfo().getSystemInfo().getVersion(), "version invalid");
 		var target = ClientBuilder.newClient().target(url);