docker-compose.yml

#Docker Compose file Reference (https://docs.docker.com/compose/compose-file/)
version: '3.8'

#Define services
services:

  #PostgreSQL Database
  restaurant-postgres:
    image: "postgres:13"
    restart: always
    container_name: restaurant-postgres
    ports:
      - "5432:5432" #Forward the exposed port 5432 on the container to port 5432 on the host machine
    volumes:
      - restaurant-data:/var/lib/postgresql/data

    #Environment variable for DB name, user and password
    environment:
      POSTGRES_DB: restaurant_db
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: password

  #Flight Booking Service: Spring Boot Application
  restaurant-service:
    #The docker file in restaurant-service build the jar and provides the docker image with the following name.
    build:
      context: .
      dockerfile: Dockerfile
    restart: always
    container_name: restaurant-service
    hostname: restaurant-service
    ports:
      - "8080:8080"
    depends_on:
      - restaurant-postgres

    environment:
      SPRING_DATASOURCE_URL: jdbc:postgresql://restaurant-postgres:5432/restaurant_db
      SPRING_DATASOURCE_USERNAME: postgres
      SPRING_DATASOURCE_PASSWORD: password

#Volumes for DB data
volumes:
  restaurant-data: