Docker / ptvsd / Django: Failed to attach (connect ECONNREFUSED ) - django

Question

I am trying to implement a debugging plugin ptvsd into my existing dockerized application
Running on Google Compute Engine with Ubuntu 18.04. The entire application is containerized with Docker-Compose. Back-end Plugin: Django
manage.py:
#!/usr/bin/env python
"""Django's command-line utility for administrative tasks."""
import os
import sys
import ptvsd
def main():
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'djangoserver.settings')
try:
from django.core.management import execute_from_command_line
except ImportError as exc:
raise ImportError(
"Couldn't import Django. Are you sure it's installed and "
"available on your PYTHONPATH environment variable? Did you "
"forget to activate a virtual environment?"
) from exc
ptvsd.enable_attach(address=('0.0.0.0', 5050))
execute_from_command_line(sys.argv)
if __name__ == '__main__':
main()
Launch.json
{
"name": "Attach Remote Django",
"type": "python",
"request": "attach",
"pathMappings": [
"localRoot": "${workspaceRoot}/djangoserver",
"remoteRoot": "/usr/src/"
],
"port": 5050,
"secret": "secret",
"host": "localhost"
}
docker-compose.yml
web:
build: ./djangoserver
command: gunicorn djangoserver.wsgi:application --noreload --nothreading --bind 0.0.0.0:8001
volumes:
- ./djangoserver:/usr/src
# entrypoint: /entrypoint.sh
ports:
- 5050:5050
expose:
- 8001
env_file: .env.dev
depends_on:
- db_development_2
stdin_open: true
Whenever i a do build and run the docker-composer, it starts without any problems, but later on, when I am trying to connect to the server with the debugger, I receive following error:
Failed to attach (connect ECONNREFUSED 127.0.0.1:5050)