docker-compose.yml.j2

# this is a Jinja2 template file used during the Ansible deployment
# environment specific configuration can be found in our Ansble scripts
---
name: {{ compose_stack_name }}

services:

  {% set service = 'app' %}

  app:
    image: ghcr.io/{{ template.git.package.image_name }}:{{ template.git.package.tag }}
    restart: unless-stopped
    ports:
      - "{{ template.env.host_app_port }}:8000"
    environment:
      - DEBUG={{ template.env.debug_flag }}
      - DJANGO_SECRET_KEY={{ template.env.secret_key }}
      - DJANGO_ALLOWED_HOSTS={{ template.env.allowed_hosts }}
      - DJANGO_CSRF_TRUSTED_ORIGINS={{ template.env.trusted_origins }}
      - DB_HOST=db
      - DB_PORT={{ template.env.host_db_port }}
      - DB_NAME={{ template.env.db_name }}
      - DB_USER={{ template.env.db_user }}
      - DB_PASS={{ template.env.db_pass }}
    command: >
        sh -c "poetry run python3 manage.py migrate &&
               poetry run python3 manage.py runserver 0.0.0.0:8000"
    {% if template.volumes is defined %}
    {% set vols = (template.volumes | selectattr('service', 'eq', service)) %}
    {% if vols is iterable and vols | length > 0 %}

    volumes:
    {% for vol in vols %}

      - {{ vol.name }}:{{ vol.container_path }}
    {% endfor %}
    {% endif %}
    {% endif %}

    depends_on:
      db:
        condition: service_healthy

  {% set service = 'db' %}

  db:
    image: postgres:12
    restart: unless-stopped
    environment:
      - POSTGRES_DB={{ template.env.db_name }}
      - POSTGRES_USER={{ template.env.db_user }}
      - POSTGRES_PASSWORD={{ template.env.db_pass }}
      - POSTGRES_HOST=db
    {% if template.volumes is defined %}
    {% set vols = (template.volumes | selectattr('service', 'eq', service)) %}
    {% if vols is iterable and vols | length > 0 %}

    volumes:
    {% for vol in vols %}

      - {{ vol.name }}:{{ vol.container_path }}
    {% endfor %}
    {% endif %}
    {% endif %}

    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U {{ template.env.db_user }}"]
      interval: 5s
      timeout: 5s
      retries: 5

# external volumes managed and defined by ansible
volumes:
{% for vol in template.volumes %}

  {{ vol.name }}:
    name: "{{ compose_stack_name }}--{{ vol.name }}"
    external: true
{% endfor %}