docker-compose.yml

# https://docs.docker.com/compose/compose-file/compose-file-v3/
version: "3"

services:

  app:
    build:
      context: .
    command: >
      bash -c " while !</dev/tcp/db/${DJANGO_DATABASE_PORT}; do sleep 1; done;
               ./manage.py runserver 0.0.0.0:8000"
    env_file:
      - .env
    environment:
      - DJANGO_DATABASE_HOST=db
      - DJANGO_DATABASE_PASSWORD=${DJANGO_DATABASE_PASSWORD:-postgres}
    depends_on:
      - db
    ports:
      - 8000:8000
    restart: always
    volumes:
      - ./:/legaldb

  db:
    env_file:
      - .env
    environment:
      - POSTGRES_DB=${DJANGO_DATABASE_NAME}
      - POSTGRES_USER=${DJANGO_DATABASE_USER}
      - POSTGRES_PASSWORD=${DJANGO_DATABASE_PASSWORD:-postgres}
    # https://hub.docker.com/_/postgres
    # https://devcenter.heroku.com/articles/heroku-postgresql#version-support
    # Match version to Heroku app. Keep in sync with .github/workflows/main.yml
    image: postgres:14-alpine
    restart: always
    volumes:
      - ./tmp/pgdata/:/var/lib/postgresql/data