Let PostgeSQLContainer also wait for listening port

In some situations, TestContainers think PostgreSQLContainer is ready, but the port forwarding is not yet available.
The adjusted wait strategy takes this into account.

See also rancher-sandbox/rancher-desktop#2609 (comment)

src/test/java/com/agiletestingdays/untangletestcode/unicornservice/LocalTestApplication.java

@@ -1,10 +1,13 @@
 package com.agiletestingdays.untangletestcode.unicornservice;
 
+import java.time.Duration;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.testcontainers.service.connection.ServiceConnection;
 import org.springframework.context.annotation.Bean;
 import org.testcontainers.containers.PostgreSQLContainer;
+import org.testcontainers.containers.wait.strategy.Wait;
+import org.testcontainers.containers.wait.strategy.WaitAllStrategy;
 import org.testcontainers.junit.jupiter.Testcontainers;
 
 @SpringBootApplication
@@ -14,7 +17,15 @@ class LocalTestApplication {
   @Bean
   @ServiceConnection
   public PostgreSQLContainer<?> postgreSQLContainer() {
-    return new PostgreSQLContainer<>("postgres:16");
+    return new PostgreSQLContainer<>("postgres:16")
+        // see
+        // https://github.com/rancher-sandbox/rancher-desktop/issues/2609#issuecomment-1788871956
+        .waitingFor(
+            new WaitAllStrategy()
+                .withStrategy(Wait.forListeningPort())
+                .withStrategy(
+                    Wait.forLogMessage(".*database system is ready to accept connections.*\\s", 2)
+                        .withStartupTimeout(Duration.ofSeconds(60))));
   }
 
   public static void main(String[] args) {