Dockerized Django REST应用程序和PostgreSQL DB

Question

Is there any way that I do not need to change my settings.py file every time i decide to run my application ? What I mean is this:

-Every time I want to run dockerized application with docker-compose my settings.py file looks like this:

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': 'agent_technologies_db',
        'USER': 'stefan_radonjic',
        'PASSWORD': 'cepajecar995',
        'HOST': 'db', 
        'PORT': '',
        }
}

-And every time i want to run my application on my local machine my settings.py looks like this:

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': 'agent_technologies_db',
        'USER': 'stefan_radonjic',
        'PASSWORD': 'cepajecar995',
        'HOST': 'localhost', 
        'PORT': '',
        }
}

Is there any way around this?

Here is what my docker-compose.yml file looks like:

version: '3'

services:
  db:
    image: postgres
    environment:
      - POSTGRES_USER=stefan_radonjic
      - POSTGRES_PASSWORD=cepajecar995
      - POSTGRES_DB=agent_technologies_db
  web:
    build: .
    command: python manage.py runserver 0.0.0.0:8000
    volumes: 
      - .:/agent-technologies
    ports: 
      - "8000:8000"
    links:
      - db
    depends_on:
      - db

Answer 1

Easiest way: use two separate settings files.

When running on local machine, use settings.py .

When running in Docker, use settings-docker.py (or whatever the name is), and bind mount this file into the container as settings.py . This way, your application inside the container will see only the settings.py file as expected.

Simply modify your docker-compose.yml file like this (make sure to use the correct path):

volumes: 
  - .:/agent-technologies
  - settings-docker.py:/app/settings.py

Answer 2

I have fixed the issue by following the solution provided on the following link:

How to properly runserver on different settings for Django?