Configure a docker container to access both internet and other docker containers

Question

I am using docker for windows and have a docker compose file that is creating a couple of customer applications as well as a RabbitMq and a Seq container. These are all talking to each other via instance names on the local network created by docker-compose, for example;

version: '3.4'

services:
  legacydata.workerservice:
    container_name: legacydata.workerservice
    image: ${DOCKER_REGISTRY-}legacydataworkerservice
    build:
      context: .
      dockerfile: LegacyData.Worker/Dockerfile
    depends_on:
      - rabbitmq

  legacydata.consumer:
    container_name: legacydata.consumer
    image: ${DOCKER_REGISTRY-}legacydataconsumer
    build:
      context: .
      dockerfile: LegacyData.Consumer/Dockerfile
    depends_on:
      - rabbitmq

  rabbitmq:
    image: rabbitmq:3-management-alpine
    container_name: rabbitmq
    environment:
      - RABBITMQ_ERLANG_COOKIE='secretcookie'
      - RABBITMQ_DEFAULT_USER=user
      - RABBITMQ_DEFAULT_PASS=password        
    ports:
      - 5672:5672
      - 15672:15672

## Move Seq to Azure ACI
#  seq:
#    image: datalust/seq:latest
#    container_name: seq
#    ports:
#      - 5341:80
#    environment:
#      ACCEPT_EULA: Y

I want move the Seq instance into Azure ACI (I have this running and I can access it as expected for example http://myseq.southuk.azurecontainer.io).

How do I configure the docker to allow my local containers to access both each other, and internet resources?

Answer 1

Actually, you can create a container group contains all the containers, the containers inside a container group can communicate with each other with the ports that they have exposed. You follow the example here. And in default, the containers also can access the Internet with no problem.

The only problem is that you need to create all the images yourself locally from the Dockerfile. ACI does not support to create the images for you.