Fix PostgresqlDatabaseContainerProvider get Image is incorrect (#15434)

dolphinscheduler-tools/src/test/java/org/apache/dolphinscheduler/tools/datasource/postgresql/PostgresqlDatabaseContainerProvider.java

@@ -40,7 +40,8 @@ public class PostgresqlDatabaseContainerProvider implements DatabaseContainerPro
     @Override
     public GenericContainer<?> getContainer(DolphinSchedulerDatabaseContainer dataSourceContainer) {
         // todo: test with multiple pg version
-        GenericContainer<?> postgresqlContainer = new PostgreSQLContainer(DockerImageName.parse("postgres:11.1"))
+        GenericContainer<?> postgresqlContainer =
+                new PostgreSQLContainer(DockerImageName.parse(dataSourceContainer.imageName()))
                         .withUsername("root")
                         .withPassword("root")
                         .withDatabaseName("dolphinscheduler")