docker-compose.yml

version: '3.10' #version of docker-compose
services:
  db:
    image: postgres:14.1-alpine #pull postgres image from Dockerhub 
    container_name: sampletodo_db
    restart: always
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
    ports:
      - '127.0.0.1:3000:5432'
    volumes: 
      - db:/var/lib/postgresql/data
    networks:
      mynet:
        aliases:
          - db
    healthcheck: 
      test: ["CMD-SHELL", "pg_isready -U postgres"]
      interval: 1s
      retries: 3
  web:
    build: .  
    container_name: sampletodo_web
    depends_on:
      db: 
        condition: service_healthy # to make sure that database is ready to start 
    ports:
      - '127.0.0.1:8000:8080'
    environment:
      POSTGRES_URL: postgresql://postgres:postgres@db:5432/postgres
    volumes:
      - './:/src'
    networks:
      mynet:

volumes: 
  db: 
    driver: local

networks:
  mynet:
    driver: bridge