docker-compose.yml

services:
  pg_test:
    image: postgres:16-alpine
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: testpass
      POSTGRES_DB: postgres
    ports:
      - "5432:5432"                    # expose to host for tests
    healthcheck:                       # wait until the DB is ready
      test: ["CMD-SHELL", "pg_isready -U postgres"]
      interval: 2s
      timeout: 2s
      retries: 15
    tmpfs:
      - /var/lib/postgresql/data       # store data in RAM