Add container support for Oracle Free which replaces Oracle XE

Update Docker Compose and Testcontainers support to work with
`gvenzl/oracle-free` which replaces `gvenzl/oracle-xe`.

Closes gh-38476

spring-boot-project/spring-boot-testcontainers/src/test/java/org/springframework/boot/testcontainers/service/connection/r2dbc/OracleFreeR2dbcContainerConnectionDetailsFactoryTests.java

@@ -0,0 +1,86 @@
+/*
+ * Copyright 2012-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.testcontainers.service.connection.r2dbc;
+
+import java.time.Duration;
+
+import io.r2dbc.spi.ConnectionFactory;
+import io.r2dbc.spi.ConnectionFactoryOptions;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.OS;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
+import org.testcontainers.oracle.OracleContainer;
+
+import org.springframework.aot.hint.RuntimeHints;
+import org.springframework.aot.hint.predicate.RuntimeHintsPredicates;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
+import org.springframework.boot.autoconfigure.r2dbc.R2dbcAutoConfiguration;
+import org.springframework.boot.jdbc.DatabaseDriver;
+import org.springframework.boot.testcontainers.service.connection.ContainerConnectionDetailsFactoryHints;
+import org.springframework.boot.testcontainers.service.connection.ServiceConnection;
+import org.springframework.boot.testsupport.junit.DisabledOnOs;
+import org.springframework.boot.testsupport.testcontainers.DockerImageNames;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.r2dbc.core.DatabaseClient;
+import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link OracleFreeR2dbcContainerConnectionDetailsFactory}.
+ *
+ * @author Andy Wilkinson
+ */
+@SpringJUnitConfig
+@Testcontainers(disabledWithoutDocker = true)
+@DisabledOnOs(os = { OS.LINUX, OS.MAC }, architecture = "aarch64",
+		disabledReason = "The Oracle image has no ARM support")
+class OracleFreeR2dbcContainerConnectionDetailsFactoryTests {
+
+	@Container
+	@ServiceConnection
+	static final OracleContainer oracle = new OracleContainer(DockerImageNames.oracleFree())
+		.withStartupTimeout(Duration.ofMinutes(2));
+
+	@Autowired
+	ConnectionFactory connectionFactory;
+
+	@Test
+	void connectionCanBeMadeToOracleContainer() {
+		Object result = DatabaseClient.create(this.connectionFactory)
+			.sql(DatabaseDriver.ORACLE.getValidationQuery())
+			.map((row, metadata) -> row.get(0))
+			.first()
+			.block(Duration.ofSeconds(30));
+		assertThat(result).isEqualTo("Hello");
+	}
+
+	@Test
+	void shouldRegisterHints() {
+		RuntimeHints hints = ContainerConnectionDetailsFactoryHints.getRegisteredHints(getClass().getClassLoader());
+		assertThat(RuntimeHintsPredicates.reflection().onType(ConnectionFactoryOptions.class)).accepts(hints);
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	@ImportAutoConfiguration(R2dbcAutoConfiguration.class)
+	static class TestConfiguration {
+
+	}
+
+}

spring-boot-project/spring-boot-testcontainers/src/test/java/org/springframework/boot/testcontainers/service/connection/r2dbc/OracleXeR2dbcContainerConnectionDetailsFactoryTests.java

@@ -43,7 +43,7 @@ import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
- * Tests for {@link OracleR2dbcContainerConnectionDetailsFactory}.
+ * Tests for {@link OracleXeR2dbcContainerConnectionDetailsFactory}.
  *
  * @author Andy Wilkinson
  */
@@ -51,7 +51,7 @@ import static org.assertj.core.api.Assertions.assertThat;
 @Testcontainers(disabledWithoutDocker = true)
 @DisabledOnOs(os = { OS.LINUX, OS.MAC }, architecture = "aarch64",
 		disabledReason = "The Oracle image has no ARM support")
-class OracleR2dbcContainerConnectionDetailsFactoryTests {
+class OracleXeR2dbcContainerConnectionDetailsFactoryTests {
 
 	@Container
 	@ServiceConnection