version: '3'
services:
  db:
    image: postgres:9.6.15-alpine
    ports:
      - 127.0.0.1:5432:5432
    environment:
      POSTGRES_PASSWORD: ${DB_PASS}
      POSTGRES_USER: ${DB_USER:-myapp}
      POSTGRES_DB: ${DB_NAME:-myapp}
    volumes:
      - ${DATA_DIR:-./data/postgresql}:/var/lib/postgresql/data
  cache:
    image: redis:latest
    ports:
      - 127.0.0.1:6379:6379