Dockerfiles to create images for use in local Django development environments
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README.md

README.md

docker-django-local

Dockerfiles to create images for use in local Django development environments.

Designed to be used with Docker Compose, it will make things a lot easier.

I took most of these Dockerfiles from existing projects and modified them to work for my setup.

Here's a sample Django application that uses these Docker images: https://github.com/jcalazan/youtube-audio-dl

Images Info

  • base - Ubuntu 16.04 with commonly used packages for Django/Python development.
  • postgresql - PostgreSQL 9.6 database (default username/password is docker/docker).
  • django - Not much difference from the base image except port 80 is exposed and contains a few additional packages/libraries.
  • rabbitmq - RabbitMQ message broker usually used with Celery.

Docker Registry

You can pull these images directly from the Docker Registry: https://hub.docker.com/u/jcalazan/

This repo is configured for automated builds.

Sample docker-compose.yml Configuration

postgresql:
  image: jcalazan/postgresql
  environment:
    - POSTGRESQL_DB=youtubeadl
    - POSTGRESQL_USER=youtubeadl
    - POSTGRESQL_PASSWORD=password
  volumes:
    - ~/dockerfiles/youtube-audio-dl/postgresql:/var/lib/postgresql
  ports:
    - "5432:5432"

rabbitmq:
  image: jcalazan/rabbitmq
  ports:
    - "15672:15672"

# NOTES:
#   - The C_FORCE_ROOT variable allows celery to run as the root user.
celery:
  image: jcalazan/django
  environment:
    - C_FORCE_ROOT=true
    - DATABASE_HOST=postgresql
    - BROKER_URL=amqp://guest:guest@rabbitmq//
  working_dir: /youtube-audio-dl
  command: bash -c "sleep 3 && celery -A youtubeadl worker -E -l info --concurrency=3"
  volumes:
    - .:/youtube-audio-dl
    - ~/dockerfiles/youtube-audio-dl/python:/usr/local/lib/python2.7
    - ~/dockerfiles/youtube-audio-dl/bin:/usr/local/bin
  links:
    - postgresql
    - rabbitmq

# NOTES:
#   - The C_FORCE_ROOT variable allows celery to run as the root user.
flower:
  image: jcalazan/django
  environment:
    - C_FORCE_ROOT=true
    - DATABASE_HOST=postgresql
    - BROKER_URL=amqp://guest:guest@rabbitmq//
  working_dir: /youtube-audio-dl
  command: bash -c "sleep 3 && celery -A youtubeadl flower --port=5555"
  volumes:
    - .:/youtube-audio-dl
    - ~/dockerfiles/youtube-audio-dl/python:/usr/local/lib/python2.7
    - ~/dockerfiles/youtube-audio-dl/bin:/usr/local/bin
  ports:
    - "5555:5555"
  links:
    - postgresql
    - rabbitmq

django:
  image: jcalazan/django
  environment:
    - DATABASE_HOST=postgresql
    - BROKER_URL=amqp://guest:guest@rabbitmq//
  working_dir: /youtube-audio-dl
  command: bash -c "sleep 3 && python manage.py runserver_plus 0.0.0.0:80" 
  volumes:
    - .:/youtube-audio-dl
    - ~/dockerfiles/youtube-audio-dl/python:/usr/local/lib/python2.7
    - ~/dockerfiles/youtube-audio-dl/bin:/usr/local/bin
  ports:
    - "80:80"
  links:
    - postgresql
    - rabbitmq

A few things to note about this sample configuration:

  • Under volumes:, local directories are mapped to the containers. It expects docker-compose.yml to be in the root project directory. Python packages are also mapped from the local directory to make the image more reusable (i.e. no need to rebuild the images every time you add a new package to your project).
  • For the youtube-audio-dl project, the manage.py file is in the project root, that's why I set that path as the working_dir.
  • You can run Django management commands inside the django container by prepending docker-compose run django (e.g. docker-compose run django python manage.py migrate).
  • By default, everything run as root in the Docker containers.
  • The sleep part in the command is to make sure the PostgreSQL service is ready to accept the connections before running a command that depends on it (see https://github.com/docker/compose/issues/374).