Why exactly Docker compose? Docker compose used when you want to run your applications on any machine and start it by one click. This way called as serverless and cross platform architecture. Docker allow you to run applications on any computer, where it installed. It's very convenient and simple.
Complete structure of project:
demo_project/
|
|-- manage.py
|
|-- env/
|
|-- backend/
| |
| |-- asgi.py
| |-- __init__.py
| |-- settings.py
| |-- urls.py
| |-- wsgi.py
|
|-- core/
| |
| |-- admin.py
| |-- apps.py
| |-- __init__.py
| |-- models.py
| |-- tests.py
| |-- views.py
|
|-- Dockerfile
|
|-- docker-compose.yaml
|
|-- nginx/
|
|-- default.conf
Start new Django project or open existing.
Create requirements.txt file for dependencies:
django
psycopg
gunicorn
Edit ALLOWED_HOSTS value in settings.py file for listing your domain and IP address:
ALLOWED_HOSTS = [
'0.0.0.0',
'localhost',
'your-domain.com'
]
Docker read content of Dockerfile as instructions and build your own container image. Create Dockerfile in project's root folder with this parameters:
FROM python:latest
ARG APP=/app
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1
WORKDIR ${APP}
COPY . .
RUN pip install --no-cache-dir -r requirements.txt
CMD ["gunicorn", "--bind", "0.0.0.0:8000", "--workers", "2", "backend.wsgi:application"]
Attention: don't run with python manage.py runserver in production!
Create docker-compose.yaml file in project's root folder and put following values:
services:
database:
container_name: database
image: postgres:latest
restart: unless-stopped
shm_size: 128mb
networks:
- internal_network
volumes:
- /var/lib/postgresql/data/:/var/lib/postgresql/data/
environment:
POSTGRES_HOST: database
POSTGRES_DB: database_name
POSTGRES_USER: database_user
POSTGRES_PASSWORD: password
ports:
- 127.0.0.1:5432:5432
backend:
container_name: backend
build:
context: .
dockerfile: Dockerfile
restart: unless-stopped
depends_on:
- database
networks:
- internal_network
volumes:
- ./media/:/app/media/
ports:
- 127.0.0.1:8000:8000
nginx:
container_name: nginx
image: nginx
restart: unless-stopped
depends_on:
- backend
networks:
- internal_network
volumes:
- ./nginx/default.conf:/etc/nginx/conf.d/default.conf
ports:
- '80:80'
- '443:443'
networks:
internal_network:
ipam:
driver: default
config:
- subnet: 172.18.0.0/24
Create default.conf file insinde of nginx directory:
server {
listen 80 default_server;
server_name _;
location / {
proxy_set_header Host $host;
proxy_pass http://backend:8000;
}
}
Now start application:
docker compose up -d
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