docker-compose.yaml

version: "3.9"
   
services:

  db:
    image: postgres
    volumes:
      - pgdata:/var/lib/postgresql/data # Volume to keep data alive even if the container is killed.
    environment: # Have to set the below environment variables when using postgres database.
      - POSTGRES_DB=postgres
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres

  file_converter_app:
    build:
      context: ./
      dockerfile: file_converter_app.Dockerfile
    command: > # Making sure that the inside the container the app runs on 8000th port.
        bash -c "python manage.py makemigrations 
        && python manage.py migrate 
        && python manage.py runserver 0.0.0.0:8000"
    volumes:
      - .:/code
    ports: # Exposing the 8000th port to the local machine's 8000th port.
      - "8000:8000"
    depends_on: # Since, this image depends on the postgres image defined and configured above.
      - db


volumes: # Mentioning all the volumes of this particular docker-compose.yaml file
  pgdata: