Is it possible to run multiple containers (using docker compose) and make a network connection

[Niv Penso]

Hello,

I'm trying to use my local docker-compose configuration to run functional tests over a bitbucket pipeline.

Important to say that I was able to download and install docker-compose on the container image and all the containers have been built successfully.

The problem is when one container tries to connect to another container it can't find it's address using the DNS. It seems that they don't share the same network and therefore, I can't access these containers.

here is the error

Trying to connect to server...

Server Error: getaddrinfo ENOTFOUND container1 container1:4000

I have read that bitbucket pipeline uses a bitbucket-pipeline docker plugin to restrict network access, but I can't figure out how to make these 2 containers communicate with each other - which seems like a trivial scenario for testing.

attaching here the docker-compose.yml and bitbucket-pipelines.yml configuration files

version: "3.6"
  networks:
    bitbucketnet:
      driver: bridge

services:
  mysql:
    image: mysql:5.6
    container_name: mysql
    volumes:
      - ../../deps/db-local/:/docker-entrypoint-initdb.d/
    networks:
      - bitbucketnet
    environment:
      MYSQL_LOG_CONSOLE: "false"
      MYSQL_ROOT_PASSWORD: "somepass"
    ports:
      - 3306:3306

  container1:
    container_name: container1
    depends_on:
      - mysql
    networks:
      - bitbucketnet
    build: ../../services/container1
    volumes:
      - "../../services/c1/src:/app/src"
      - "../../services/c1/package.json:/app/package.json"
      - "../../services/c1/package-lock.json:/app/package-lock.json"
    environment:
      NODE_ENV: test
      DB_HOST: mysql
      DB_NAME: dbname
      DB_USER: root
      DB_PASSWORD: somepass
      DB_PORT: 3306
      PORT: 4000
    ports:
      - 4000:4000

  # Functional tests
  tests:
    container_name: container1-tests
    depends_on:
      - container1
    networks:
      - bitbucketnet
    build: ./
    environment:
      SERVER_URL: http://container1:4000
      DB_ENDPOINT: mysql://root:somepass@mysql:3306/dbname

I have created the following bitbucket-pipeline configuration like this:

image: node:11.10.1

pipelines:
  custom: # defines that this can only be triggered manually or by a   schedule
    ManualBuild: # The name that is displayed in the list in the Bitbucket Cloud GUI
      - step:
        name: Run Functional Tests
        services:
          - docker
        caches:
          - docker
        script:
          - set -eu
          # Add python pip and bash
          - apt-get update && apt-get -y install python3-minimal python3-pip
          # Install docker-compose via pip
          - pip3 install docker-compose
          - docker -v
          - docker-compose -v
          - cd ./services/tests
          - docker-compose build tests
          - docker-compose run tests

[Niv Penso · Accepted solution]

This ticket can be closed.

The reason the DNS couldn't find container1 is because the container1 exited with an error. (the logs didn't describe it)