hardcoding docker image versions

.gitlab-ci.yml

@@ -54,16 +54,14 @@ test:
         - docker:17.12.1-ce-dind
     script:
         - docker load -i image.tar
-        - env
         - >
           docker run
           $DOCKER_USER/$DOCKER_IMAGE_TAG
           sh -c "
-          env
           && printf \"REDIS_HOST='$REDIS_PORT_6379_TCP_ADDR'\nBROKER_URL='amqp://guest:guest@$RABBITMQ_PORT_5672_TCP_ADDR:5672//'\nCELERY_RESULT_BACKEND='redis://$REDIS_PORT_6379_TCP_ADDR:6379'\"
           > /config.py
           && export FRACTALIS_CONFIG=/config.py
-          && celery worker -D -A fractalis:celery -l debug --concurrency=1
+          && celery worker -A fractalis:celery -l debug --concurrency=1
           && pytest --color=yes --verbose --capture=no --cov=/usr/lib/python3.4/site-packages/fractalis tests/
           "
     dependencies: