Service registers itself with weird hostname at eureka - spring-cloud

Question

I'm just exploring the Spring Cloud stack. I've set up an Eureka instance and then set up a service that registers itself with Eureka.
Eureka:
appliation.properties
spring.application.name=registry
server.port=8761
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
Main class:
#SpringBootApplication
#EnableEurekaServer
public class RegistryApplication {
public static void main(String[] args) {
SpringApplication.run(RegistryApplication.class, args);
}
}
Service:
application.properties:
spring.application.name=example-service
server.port=1111
eureka.client.service-url.defaultZone=http://localhost:8761/eureka/
Main class:
#SpringBootApplication
#EnableDiscoveryClient
#RestController
public class AppServiceApplication {
public static void main(String[] args) {
SpringApplication.run(AppServiceApplication.class, args);
}
#RequestMapping("/")
public String sayHi() {
return "Hi";
}
}
Now both eureka and the service are starting up and the service registers itself with eureka as expected. However it registers itself with a rather weird hostname and I am not able to figure out what exactly is going on or why this is happening. This is a screenshot of the eureka dashboard showing the weird hostname:
I tried the same setup on my laptop and there the hostname is just 'localhost' as expected.
Does someone have an explanation for this ? Thank you in advance for your answers!
Edit: I'm using Spring Boot version 2.0.5.RELEASE