scripts/ci/docker-compose/backend-postgres.yml

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---
version: "3.7"
services:
  airflow:
    environment:
      - BACKEND=postgres
      - AIRFLOW__DATABASE__SQL_ALCHEMY_CONN=postgresql+psycopg2://postgres:airflow@postgres/airflow
      - AIRFLOW__CELERY__RESULT_BACKEND=db+postgresql://postgres:airflow@postgres/airflow
      - AIRFLOW__CORE__EXECUTOR=LocalExecutor
    depends_on:
      postgres:
        condition: service_healthy

  postgres:
    image: postgres:${POSTGRES_VERSION}
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=airflow
      - POSTGRES_DB=airflow
      - POSTGRES_HOST_AUTH_METHOD=password
    volumes:
      - /dev/urandom:/dev/random   # Required to get non-blocking entropy source
      - postgres-db-volume:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD", "psql", "-h", "localhost", "-U", "postgres", "-c", "select 1", "airflow"]
      interval: 10s
      timeout: 10s
      retries: 5
    restart: "on-failure"
volumes:
  postgres-db-volume: