public static GenericContainer startNacos(String version) {
		if (!nacosMap.containsKey(version)) {
			GenericContainer nacos = new GenericContainer("freemanlau/nacos:" + version)
					.withExposedPorts(8848).withEnv("MODE", "standalone")
					.withEnv("JVM_XMS", "256m").withEnv("JVM_XMX", "256m")
					.withEnv("JVM_XMN", "128m");
			nacos.start();
			nacosMap.put(version, nacos);
		}
		return nacosMap.get(version);
	}
Start Nacos container, using specific version.
@param version Nacos version
spring-cloud-alibaba-tests/spring-cloud-alibaba-test-support/src/main/java/com/alibaba/cloud/testsupport/ContainerStarter.java