named volume inside bind mount is not good

[glebmikha]

In your docker-compose you put:

volumes:
- ./app/:/usr/src/app/
- static_volume:/usr/src/app/staticfiles
- media_volume:/usr/src/app/mediafiles

Static_volume and media_volume are inside bind mount /usr/src/app/. It's kinda double mount. One overrides another.

I've noticed that after some file uploads or some service restarts it stops working correctly: nginx stops serve files, like in this issue .

After removing - ./app/:/usr/src/app/ from docker-compose volumes service begins to work correctly.

I thing volumes shouldn't be used like that. But I understand that bind mount - ./app/:/usr/src/app/ is convenient for development. In production mode this mount should be switched off.

It could be two separate docker-compose files in this case: dev and prod. And in dev you could use just django default web server without nginx. See this guide -- they do exactly that: separate nginx from app.

What do you think?

P.S. Thank you for your tutorial: it's very clear and well written. Your work helped me a lot.

[mjhea0]

I agree with you on almost all of this. I am planning on refreshing the tutorial very soon. Do you want to submit a PR for the changes to the compose file?

[daddydrac]

There also seems to be an issue with Postgres, there isnt a local db file that gets created in the folder postgres_data that is supposed to be mounted.

[sms-swe]

Comment out the bold line. This clears out the database every time the container is built. Only took me two weeks and countless google searches to figure out.

#!/bin/sh

if [ "$DATABASE" = "postgres" ]
then
echo "Waiting for postgres..."

while ! nc -z $SQL_HOST $SQL_PORT; do
  sleep 0.1
done

echo "PostgreSQL started"

fi

python manage.py flush --no-input
python manage.py migrate

exec "$@"

[daddydrac]

I have new compose version I made on my own and works great; Entrypoint was a thing we did back in the day when Docker was in its infancy. If you use Docker CE + Compose Entrypoint is not meeded, unless you are doing complex tasks like Docker swarm.

[mjhea0]

@joehoeller can I take a look at your compose file? Thanks!

[mjhea0]

Fixed #8

[mjhea0]

Thanks for you help on this @glebmikha. I made some additional changes and refreshed the post. https://testdriven.io/blog/dockerizing-django-with-postgres-gunicorn-and-nginx/