How to observe scheduled tasks output with Django celery and Docker - django

Question

I have setup my celery app for django and trying to test a simple periodic tasks in my django app.
I have used RabbitMQ as message broker and setup broker_url by passing environment variables from docker-compose.yml file as well.
I have following structure in docker-compose.yml file.
version: '3'
services:
nginx:
restart: always
image: nginx:latest
container_name: NGINX
ports:
- "8000:8000"
volumes:
- ./src:/src
- ./config/nginx:/etc/nginx/conf.d
- /static:/static
depends_on:
- web
web:
restart: always
build: .
container_name: DJANGO
command: bash -c "python manage.py makemigrations && python manage.py migrate && gunicorn loop.wsgi -b 0.0.0.0:8000 --reload"
depends_on:
- db
volumes:
- ./src:/src
- /static:/static
expose:
- "8000"
links:
- db
- rabbit
db:
restart: always
image: postgres:latest
container_name: PSQL
rabbit:
hostname: rabbit
image: rabbitmq:latest
ports:
# We forward this port for debugging purposes.
- "5672:5672"
# Here, we can access the rabbitmq management plugin.
- "15672:15672"
environment:
- RABBITMQ_DEFAULT_USER=admin
- RABBITMQ_DEFAULT_PASS=mypass
# Celery worker
worker:
build: .
command: bash -c "python manage.py celery worker -B --concurrency=1"
volumes:
- .:/src
links:
- db
- rabbit
depends_on:
- rabbit
For testing purpose, I have created a schedule tasks in settings.py as follows:(scheduling for 10 seconds)
CELERYBEAT_SCHEDULE = {
'schedule-task': {
'task': 'myapp.tasks.test_print',
'schedule': 10, # in seconds
},
}
and the tasts.py file inside myapp has following code:
# -*- coding: utf-8 -*-
from celery.task import task
#task(ignore_result=True, max_retries=1, default_retry_delay=10)
def test_print():
print ("Print from celery task")
When I run command : docker-compose run web python manage.py celery worker -B --concurrency=1
The test_print is executed and the output is printed.
But when I run docker-compose up --build, the following output is printed. But, the tasks test_print is not executed?
rabbit_1 | =INFO REPORT==== 15-Jun-2017::13:05:30 ===
rabbit_1 | accepting AMQP connection <0.354.0> (172.18.0.7:51400 -> 172.18.0.3:5672)
rabbit_1 | =INFO REPORT==== 15-Jun-2017::12:54:25 ===
rabbit_1 | connection <0.421.0> (172.18.0.6:52052 -> 172.18.0.3:5672): user 'admin' authenticated and granted access to vhost '/'
I am new to docker. Any guidance will be very helpful.