howmuch/deployment/docker-compose.yml

services:

  postgres:
    image: postgres
    restart: always
    ports:
      - "5432:5432"
    deploy:
      mode: replicated
      replicas: 1
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: example
      POSTGRES_DB: howmuch
    volumes:
      - ../../db_data_howmuch/postgres/:/var/lib/postgresql/data

  adminer:
    image: adminer
    restart: always
    ports:
      - 8080:8080