This is an example of how you can use docker-compose within Gitlab CI. Here I am running integration tests, where the tests themselves kill and start Docker containers. The `docker-compose.test.yml` starts up the container in which we will run our te

.gitlab-ci.yml

tests:integration:
  stage: test
  image: hmajid2301/dind-docker-compose
  script:
    - sh tests/run_integration_tests.sh;
  after_script:
    - docker-compose -f docker-compose.test.yml down

docker-compose.test.yml

version: "3"

services:
  test_app:
    container_name: my_container
    build:
      context: .
      dockerfile: docker/flask/Dockerfile
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock

docker-compose.yml

version: "3"

services:
  service1:
    container_name: container1
    build:
      context: tests
      dockerfile: Dockerfile1
    ports:
      - 88:88

  service2:
    container_name: container2
    build:
      dockerfile: Dockerfile2
    ports:
      - 99:99

run_integration_tests.sh

docker-compose -f docker-compose.test.yml up --build -d
docker exec my_container bash -c "pip install pytest pytest-flask docker-compose docker lovely-pytest-docker"
docker cp ./tests/ my_contianer:/app/
docker cp ./docker-compose.yml my_container:/app/
docker exec my_container ash -c "pytest -s tests/test_integration.py"

test_integration.py

import os
import time
from unittest import mock

import docker as docker_py
import pytest

from my_app import create_app

docker_client = docker_py.from_env()
docker_compose_network_name = None
docker_compose = None


def kill_container(container_name):
    container = get_container(container_name)
    container.kill()
    container.remove()


def get_container(container_name):
    containers = docker_client.containers.list()
    for container in containers:
        if container.name == container_name:
            return container


def run_container(image_name, **args):
    docker_client.containers.run(image_name, detach=True, **args)


@pytest.fixture(scope="session")
def docker_compose_files(pytestconfig):
    """Get the docker-compose.yml absolute path.
    Override this fixture in your tests if you need a custom location.
    """
    return ["/app/docker-compose.yml"]


@pytest.fixture(scope="session", autouse=True)
def docker(docker_services):
    global docker_compose
    docker_compose = docker_services


@pytest.fixture(scope="session", autouse=True)
def setup():
    service_names = ["service1", "service2"]
    [docker_compose.start(service) for service in service_names]
    containers = docker_client.containers.list()
    yield
    container_names = ["container1", "container2"]
    try:
        [kill_container(container) for container in container_names]
    except AttributeError:
        pass