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About

This repo contains an example Docker image running a Django applicatoin with uWSGI and NGINX serving static files within one Docker container. The base image and main inspiration repos for the setup are uwsgi-nginx-docker and uwsgi-nginx-flask-docker.

This setup could be a suitable fit for when running on a single server with docker-compose. For more information, see this excellent post from FastAPI on this.

Key points of this setup:

  • NGINX for static files, uWSGI for the Django app
  • Supervisord manages uWSGI and NGINX processes within the container
  • Sane default configurations thanks to uwsgi-nginx-docker
  • Configurable number of processes for uWSGI and NGINX by env variables, so that you don't have to rebuild the container when changing these.

Here is a list of env variables that can be set to dynamically configure the container at run time in docker-compose.yml, or if preferred at buildtime in Dockerfile.

# Maximum upload file size for Nginx, default to 0: unlimited
NGINX_MAX_UPLOAD

# Number of workers for Nginx, default to 1
NGINX_WORKER_PROCESSES

# Max number of connections per worker for Nginx, if requested
# Cannot exceed worker_rlimit_nofile, see NGINX_WORKER_OPEN_FILES in entrypoint.sh, default to 1024
NGINX_WORKER_CONNECTIONS

# Min number of uWSGI processes, default to 2
UWSGI_CHEAPER

# Max number or uWSGI processes, defaults to 16
# When the server is experiencing a high load, it creates up to 16 uWSGI processes to handle it on demand.
UWSGI_PROCESSES

# Listen port for Nginx, default to 80
LISTEN_PORT

# Get the URL for static files, default to /static
STATIC_URL

# Absolute path of the static files, default to /app/static
STATIC_PATH

The following files can be used for configuration:

  • If there's a prestart.sh script in the /app directory of the container it will be run before starting the application.
  • entrypoint.sh - entrypoint file for the container that dynamically generetates the nginx config
  • app/app/uwsgi.ini - uwsgi configurations to override the uwsgi-nginx-docker defaults

Setup

Make sure you have:

  • Docker
  • Docker-compose

Build the cointainer:

docker-compose build

Run the container:

docker-compose up

NOTE: this setup does not have any live reloading of files, so remember to rebuild the container if changing any of the source files.

Go to the URL http://localhost/polls/

If the link text of Some link is green that means that the configuration of the static files is working, since that is set by a static CSS file. If the link is blue, which is the default, check your static file configuration.