diff --git a/examples/springboot-postgresql/README.md b/examples/springboot-postgresql/README.md
deleted file mode 100644
index 1061b29..0000000
--- a/examples/springboot-postgresql/README.md
+++ /dev/null
@@ -1,80 +0,0 @@
-# TestContainers PostgreSQL Example
-
-This module demonstrates how to use the TestContainers-Ext library with PostgreSQL.
-
-## Overview
-
-This example shows two ways to use TestContainers-Ext with PostgreSQL:
-
-1. **Annotation-based approach**: Using the `@EnableJdbcContainer` annotation in tests
-2. **Programmatic approach**: Directly creating and managing container instances
-
-## Structure
-
-- `src/main/java`: Contains a demo application showing programmatic usage
-- `src/test/java`: Contains test examples showing annotation-based usage
-
-## Annotation-based Usage
-
-The annotation-based approach is the simplest way to use TestContainers-Ext. Just add the `@EnableJdbcContainer` annotation to your test class:
-
-```java
-@EnableJdbcContainer(rdbms = Rdbms.POSTGRES, version = "13.2")
-public class PostgresqlExampleTest {
-
-    @Test
-    public void testWithPostgresql() {
-        // The PostgreSQL container is automatically started before this test
-        // and stopped after the test completes.
-        
-        System.out.println("PostgreSQL container is running!");
-        
-        // You can access connection details using:
-        // - System.getProperty("db.url")
-        // - System.getProperty("db.username")
-        // - System.getProperty("db.password")
-    }
-}
-```
-
-## Programmatic Usage
-
-For more control, you can create and manage containers programmatically:
-
-```java
-// Create a PostgreSQL container factory
-PostgresSqlContainerFactory factory = new PostgresSqlContainerFactory();
-
-// Create a PostgreSQL container with version 13.2
-JdbcDatabaseContainer<?> container = factory.createContainer("13.2");
-
-// Start the container
-container.start();
-
-// Use the container
-System.out.println("JDBC URL: " + container.getJdbcUrl());
-System.out.println("Username: " + container.getUsername());
-System.out.println("Password: " + container.getPassword());
-
-// Stop the container when done
-container.stop();
-```
-
-## Running the Examples
-
-### Running the Tests
-
-```bash
-./gradlew :examples:testcontainers-postgresql:test
-```
-
-### Running the Demo Application
-
-```bash
-./gradlew :examples:testcontainers-postgresql:run
-```
-
-## Requirements
-
-- Java 8 or higher
-- Docker (for running the containers)
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diff --git a/examples/springboot-postgresql/src/test/java/io/flowinquiry/testcontainers/examples/postgresql/PostgresqlDemoAppTest.java b/examples/springboot-postgresql/src/test/java/io/flowinquiry/testcontainers/examples/postgresql/PostgresqlDemoAppTest.java
index 86242d7..2ace2b1 100644
--- a/examples/springboot-postgresql/src/test/java/io/flowinquiry/testcontainers/examples/postgresql/PostgresqlDemoAppTest.java
+++ b/examples/springboot-postgresql/src/test/java/io/flowinquiry/testcontainers/examples/postgresql/PostgresqlDemoAppTest.java
@@ -42,13 +42,13 @@ public void testStoreEntityAndRepository() {
     List<Store> storesByName = storeRepository.findByName("Test Store");
     log.info("Found {} stores by name", storesByName.size());
     assertEquals(1, storesByName.size());
-    assertEquals("Test Store", storesByName.getFirst().getName());
+    assertEquals("Test Store", storesByName.get(0).getName());
 
     log.info("Testing findByDescriptionContaining");
     List<Store> storesByDescription = storeRepository.findByDescriptionContaining("demonstration");
     log.info("Found {} stores by description", storesByDescription.size());
     assertEquals(1, storesByDescription.size());
-    assertEquals("A test store for demonstration", storesByDescription.getFirst().getDescription());
+    assertEquals("A test store for demonstration", storesByDescription.get(0).getDescription());
 
     log.info("Creating another store");
     Store anotherStore =
diff --git a/gradle/license-header.txt b/gradle/license-header.txt
deleted file mode 100644
index e1f44ae..0000000
--- a/gradle/license-header.txt
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (c) 2023-2024 TestContainers-Ext Contributors
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
\ No newline at end of file