RethinkDB docker-compose.yml example

docker-compose.yml

version: '2'
services:
  rethinkdb:
    build: /rethinkdb
    ports:
     - "28015"
    volumes:
     - /data:/data
    command: rethinkdb --bind all --data /data 
  app:
    build: /app
    volumes:
     - /app/folder:/app
    command: node start --production
    depends_on: rethinkdb
    ports:
     - 8080:80
    

Dockerfile.app

IMAGE node:argon

RUN mkdir -p /usr/app
COPY . /usr/app 
WORKDIR /usr/app
RUN npm install 

Dockerfile.rethinkdb

IMAGE rethinkdb

COPY ./data.json /usr/data.json
RUN rethinkdb import -f /usr/data.json --table data.table --format json  && rm /usr/data.json

I am trying to access the image of RethinkDB but when trying to connect it shows me an error, the loaded image of RethinkDB is the following:

-docker-compose.yml

rethinkdb:
image: "rethinkdb"

---

---

-docker-compose.override.yml

rethinkdb:
image: rethinkdb
ports:
- "28015:8080"
- "28015"

and the connection to RethinkDB from a microservice is the following:

conn = R.Connection() .Hostname("localhost").Port(28015).Timeout(10).Connect();

The error is as follows:
System.Net.Sockets.SocketException: 'Cannot assign requested address'