Spring Cloud Netflix and Docker Compose - cannot register services with eureka - spring-boot

Question

I'm trying to use docker-compose to run 2 simple services locally (Ubuntu): a eureka server, and config server (which is also a eureka client). Both of these have simple dockerfiles that run java -jar, expose their ports, and individually work fine. I also tried to add eureka.client.service-url.defaultZone=http://company-service-discovery:8761/eureka to see if it would register itself, and it worked.
My config server cannot successfully register to the eureka server, and I've googled it and nothing I've seen helped me solve this.
According to docker-compose documentation at https://docs.docker.com/compose/networking/ :
By default Compose sets up a single network for your app. Each container for a service joins the default network and is both reachable by other containers on that network, and discoverable by them at a hostname identical to the container name.
With the following example web should be able to use postgres://db:5432 to communicate with the database.
version: "3"
services:
web:
build: .
ports:
- "8000:8000"
db:
image: postgres
ports:
- "8001:5432"
I have used the same method to configure my services, but my config server gets connection refused when trying to register:
docker-compose.yml
version: '3.3'
services:
company-service-discovery:
build: company-service-discovery/
ports:
- "8761:8761"
company-config-server:
build: company-config-server/
ports:
- "8888:8888"
links:
- company-service-discovery
config server bootstrap.yml
server:
port: 8888
management:
security:
enabled: false
spring:
application:
name: company-config-server
cloud:
config:
server:
native:
search-locations: classpath:/shared
profiles:
include: native
eureka:
client:
service-url:
defaultZone: http://company-service-discovery:8761/eureka
eureka server bootstrap.yml
spring:
application:
name: company-service-discovery
server:
port: 8761
management:
security:
enabled: false
exception
2017-07-26 14:25:05.738 WARN 1 --- [nfoReplicator-0] c.n.d.s.t.d.RetryableEurekaHttpClient : Request execution failed with message: java.net.ConnectException: Connection refused (Connection refused)
2017-07-26 14:25:05.739 WARN 1 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_COMPANY-CONFIG-SERVER/365d20275ab0:company-config-server:8888 - registration failed Cannot execute request on any known server
question
Is there anything wrong with my configuration ? How can I make it work ?
Let me know if there's any info missing, I'll gladly give any info I can.

Answer 1

Add the defaultZone configuration to the Eureka server's properties too (and change the service-url to serviceUrl in your config server bootstrap.yml).
eureka server bootstrap.yml
spring:
application:
name: company-service-discovery
eureka:
client:
serviceUrl:
defaultZone: http://company-service-discovery:8761/eureka
server:
port: 8761
management:
security:
enabled: false

Answer 2

Thank you sooo much. this post resolved my problem - connecting eureka client to eureka server with docker. After 2 days of searching it work. I am in tears.
So basically -
you should use following in eureka client's application.properties/.yml
eureka.client.service-url.defaultZone=http://eureka-server:8761/eureka
and in docker-compose.yml your eureka service name should match with - the url host name, in my case it is - eureka-server