data.service.ts

@Injectable()
export class DataService extends PrismaClient implements OnModuleInit, OnModuleDestroy {
  constructor() {
    super()
  }

  async onModuleInit() {
    await this.$connect()
  }

  async onModuleDestroy() {
    await this.$disconnect()
  }
}

docker-compose.yml

version: '3'
services:
  postgres:
    image: postgres
    ports:
      - "5432:5432"
    environment:
      POSTGRES_DB: prisma
      POSTGRES_USER: prisma
      POSTGRES_PASSWORD: prisma
    volumes:
      - ./tmp/postgres:/var/lib/postgresql/data