version: "2.1"
services:
  postgres:
    image: postgres:latest
    ports:
      - "5432:5432"
    volumes:
      - .:/data
    environment:
      - POSTGRES_DB=test
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
    healthcheck:
      test: ["CMD-SHELL", "pg_isready", "--username=postgres"]
      interval: 30s
      timeout: 30s
      retries: 5
    command: ["-c", "shared_buffers=256MB"]
  migrations:
    links:
      - postgres
    depends_on:
      postgres:
        condition: service_healthy
    build:
      context: .
      dockerfile: migrations.Dockerfile
    environment:
      - DATABASE_URL=postgres://postgres:postgres@postgres:5432/test