Network from docker-compose

Question

I am running an experiment locally and I want to start one service that listen to a few ports, communicates with redis, and is externally accessible

version: "3.3"
services:
  redis:
    image: redis
    networks:
      - office
    ports:
      - '6379:6379'
  workers:
    image: workers-image
    networks: 
      - office
    environment:
      NUM_WORKERS: 10
      REDIS_URI: 'redis://redis:6379'
    ports:
      - '15658-15680:15658-15680'
    depends_on:
      - redis

I was expecting to be able to access the workers service using eg 127.0.0.1:15660 , or, preferrably, something like workers.office:15660 .

Can someone point me out what I am doing wrong?

(Edit) What is not working

Sorry if after reading the original post it was not clear that what is not working as expected

After I start the workers service

docker-compose run -e NUM_WORKERS=10 workers

It will listen to a few different ports. Then I was expecting to be able to be able to get a response with

> curl 127.0.0.1:15660/metrics
curl: (7) Failed to connect to 127.0.0.1 port 15658: Connection refused

or

> curl workers.host:15658/metrics
curl: (6) Could not resolve host: workers.host

Answer 1

Docker run won't expose ports unless you pass --service-ports to the command, eg docker-compose run --service-ports -e NUM_WORKERS=10 workers .

Also, the service-ports are created while building the container, so if you change the docker-compose file you have to run docker compose build again.