Compose file template for python backend applications

dj-compose.compose.yaml

##############
# Docker Compose File
# Maintainer: Eri Adeodu (@50-Course)
# License: MIT License.
#
# Reference links:
# incase you feeling adventerous,
#   - https://docs.docker.com/compose/compose-file/
#   - https://nickjanetakis.com/blog/best-practices-around-production-ready-web-apps-with-docker-compose
#   - https://https://hackmamba.io/blog/2022/09/best-practices-when-using-docker-compose/
##############
x-app: &base-app
  build:
    context: .
    args:
      - "UID=${UID:-1000}"
      - "GID=${GID:-1000}"
  env_file:
    - ".env"
  restart: "${DOCKER_RESTART_POLICY:-unless-stopped}"
  tty: true
  volumes:
    - "${DOCKER_MOUNTED_VOLUME:-./public_sda:/app/public_sda}"

services:
  backend:
    <<: *base-app
    container_name: backend-app
    command: >
      sh -c "
      python /app/manage.py makemigrations api &&
      python /app/manage.py makemigrations &&
      python /app/manage.py migrate  &&
      python /app/manage.py collectstatic &&
      python /app/manage.py runserver 0.0.0.0:8000
      "
    healthcheck:
      test: curl http://0.0.0.0:8000/ || exit 1
      interval: 1m30s
      timeout: 40s
      retries: 3
      start_period: 30s
    depends_on:
      - db
      - redis
    ports:
      - "8000:8000"
  db:
    image: postgres:14.5-bullseye
    container_name: main_db
    deploy:
      resources:
        limits:
          cpus: "${DOCKER_MAX_ALLOWED_CPUS:-0}"
          memory: "${DOCKER_MAX_ALLOWED_MEMORY:-0}"
    restart: "${DOCKER_RESTART_POLICY:-unless-stopped}"
    ports:
      - 5432
    volumes:
      - "db:/var/lib/postgresql/data"

  celery:
    build:
      context: .
    command: celery -A core worker -B -l info
    depends_on:
      - backend
      - redis


  redis:
    image: redis:6-alpine

volumes:
  db: {}