Docker compose for java backend

version: '3.1'
services:
  API:
    image: theatre-app
    ports:
      - "8080:8080"
    depends_on:
      - PostgreSQL
    environment:
      - SPRING_DATASOURCE_URL=jdbc:postgresql://PostgreSQL:5432/db1
      - SPRING_DATASOURCE_USERNAME=postgres
      - SPRING_DATASOURCE_PASSWORD=postgres
      - SPRING_JPA_HIBERNATE_DDL_AUTO=update
    networks:
      - backend
      - frontend

  PostgreSQL:
    image: postgres
    ports:
      - "5432:5432"
    environment:
      - POSTGRES_PASSWORD=postgres
      - POSTGRES_USER=postgres
      - POSTGRES_DB=db1
    healthcheck:
      test: [ "CMD-SHELL", "pg_isready -U postgres" ]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - backend

  frontend:
    image: theatre-front
    build:
      dockerfile: Dockerfile
      args:
        REACT_APP_API_BASE_URL: http://localhost:3000
    ports:
      - "9090:80" # Map the exposed port 80 on the container to port 9090 on the host machine
    restart: always
    depends_on:
      - API
    networks:
      - frontend

  # Networks to be created to facilitate communication between containers
networks:
  backend:
  frontend: