docker-compose.yml

version: "3.9"

name: campus-hub

services:
  # Student application's PostgreSQL database running on port 5001
  student-db:
    image: postgres
    restart: always
    environment:
      POSTGRES_USER: dev
      POSTGRES_PASSWORD: dev
      POSTGRES_DB: student
    volumes:
      - student-data:/var/lib/postgresql/data
    ports:
      - "5001:5432"

  # Library application's PostgreSQL database running on port 5002
  library-db:
    image: postgres
    restart: always
    environment:
      POSTGRES_USER: dev
      POSTGRES_PASSWORD: dev
      POSTGRES_DB: library
    volumes:
      - library-data:/var/lib/postgresql/data
    ports:
      - "5002:5432"

  # Finance application's PostgreSQL database running on port 5003
  finance-db:
    image: postgres
    restart: always
    environment:
      POSTGRES_USER: dev
      POSTGRES_PASSWORD: dev
      POSTGRES_DB: finance
    volumes:
      - finance-data:/var/lib/postgresql/data
    ports:
      - "5003:5432"

  # Use Adminer to quickly view the database at localhost:8080
  adminer:
    image: adminer
    restart: always
    ports:
      - "8069:8080"

# Volumes for persisting data in the databases, so that data is not lost when containers are shut down
volumes:
  student-data:
    driver: local
  library-data:
    driver: local
  finance-data:
    driver: local