docker-compose.yml

# Specify the version of the Docker Compose.
version: "3.9"

# Define the services and applications that make up your application.
services:
  demo-app:
    build: ./demo-app # Path to the directory containing the Dockerfile for building the demo-app image.
    ports:
      - 3000:3000 # Maps port 3000 on the host to port 3000 in the container, making the app accessible on the host.
    volumes:
      - ./demo-app:/app # Mounts the host directory './demo-app' to '/app' in the container.
      - /app/node_modules # Anonymous Volume
    networks:
      - demo-network # Connects the demo-app to the 'demo-network' network.

networks:
  demo-network: # Defines a network named 'demo-network'.
    driver: bridge # Uses the bridge driver for the network, which is the default and most common network type in Docker.