diff --git a/ci/pipeline.yml b/ci/pipeline.yml
index fbf2ef5424f..5529ae2090e 100644
--- a/ci/pipeline.yml
+++ b/ci/pipeline.yml
@@ -261,7 +261,7 @@ jobs:
       - put: repo-status-jdk9-build
         params: { state: "failure", commit: "git-repo" }
       - task: determine-email-body
-        image: spring-boot-ci-image
+        image: spring-boot-jdk9-ci-image
         file: git-repo/ci/tasks/determine-email-body.yml
         params:
           STATE: failure
@@ -274,7 +274,7 @@ jobs:
           body: email-details/body
   - do:
     - task: determine-email-body
-      image: spring-boot-ci-image
+      image: spring-boot-jdk9-ci-image
       file: git-repo/ci/tasks/determine-email-body.yml
       params:
         STATE: success
@@ -320,7 +320,7 @@ jobs:
       - put: repo-status-jdk10-build
         params: { state: "failure", commit: "git-repo" }
       - task: determine-email-body
-        image: spring-boot-ci-image
+        image: spring-boot-jdk10-ci-image
         file: git-repo/ci/tasks/determine-email-body.yml
         params:
           STATE: failure
@@ -333,7 +333,7 @@ jobs:
           body: email-details/body
   - do:
     - task: determine-email-body
-      image: spring-boot-ci-image
+      image: spring-boot-jdk10-ci-image
       file: git-repo/ci/tasks/determine-email-body.yml
       params:
         STATE: success
diff --git a/spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/testcontainers/CassandraContainer.java b/spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/testcontainers/CassandraContainer.java
index ecee5179268..a0dcedc2247 100644
--- a/spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/testcontainers/CassandraContainer.java
+++ b/spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/testcontainers/CassandraContainer.java
@@ -44,7 +44,7 @@ public class CassandraContainer extends Container {
 	private static class WaitStrategy extends HostPortWaitStrategy {
 
 		@Override
-		protected void waitUntilReady() {
+		public void waitUntilReady(GenericContainer container) {
 			super.waitUntilReady();
 
 			try {
@@ -59,7 +59,7 @@ public class CassandraContainer extends Container {
 		private Callable<Boolean> checkConnection() {
 			return () -> {
 				try (Cluster cluster = Cluster.builder()
-						.withPort(this.container.getMappedPort(PORT))
+						.withPort(container.getMappedPort(PORT))
 						.addContactPoint("localhost").build()) {
 					cluster.connect();
 					return true;
diff --git a/spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/testcontainers/Neo4jContainer.java b/spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/testcontainers/Neo4jContainer.java
index 6bbb2c98657..7d6591425ed 100644
--- a/spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/testcontainers/Neo4jContainer.java
+++ b/spring-boot-project/spring-boot-tools/spring-boot-test-support/src/main/java/org/springframework/boot/testsupport/testcontainers/Neo4jContainer.java
@@ -42,10 +42,10 @@ public class Neo4jContainer extends Container {
 	private static class WaitStrategy extends HostPortWaitStrategy {
 
 		@Override
-		protected void waitUntilReady() {
+		public void waitUntilReady(GenericContainer container) {
 			super.waitUntilReady();
 			Configuration configuration = new Configuration.Builder()
-					.uri("bolt://localhost:" + this.container.getMappedPort(7687))
+					.uri("bolt://localhost:" + container.getMappedPort(7687))
 					.build();
 			SessionFactory sessionFactory = new SessionFactory(configuration,
 					"org.springframework.boot.test.autoconfigure.data.neo4j");