docker-compose.yml

version: '3.8'

services:
  # Back-end API Node.js Server
  back-end-api:
    env_file:
      - ./Back_End/.env
    # Since we have a Dockerfile, we don't need to specify the line below. It is commented out
    # image: node: 12.18.3
    container_name: face-recognition-backend
    # build allows us to build from our own Dockerfile instead of a default Image like node:8.11.1
    # build references the Dockerfile in the root directory
    build: ./Back_End
    command: npm start
    working_dir: /usr/src/Back_End
    # These environmental variables are referenced by the connection in server.js through a process.env
    environment:
      POSTGRES_USER: admin
      POSTGRES_PASSWORD: password
      POSTGRES_DB: face-recognition-database-docker
      POSTGRES_HOST: postgres
      REDIS_URL: redis://redis-cache
    # The first 3000 represents the port on your local machine, the : represents forwarding, and second 3000 represents the port of the container
    ports:
      - "3000:3000"
    # volumes allows access to the file system of the container
    # ./ represents the directory of your local machine, the : represents forwarding, and /usr/src/Back_End represents the directory of the container
    # This enables changes made on your local machine to populate in the container automatically
    volumes:
      - ./Back_End:/usr/src/Back_End
      # - /usr/src/Back_End/node_modules

  # Redis Database
  redis:
    image: redis
    container_name: redis-cache
    command: redis-server
    ports:
      - "6379:6379"

  # PostgreSQL Database
  postgres:
    # To connect the back-end-api service to our database, we need to include the environment below in both our database service and back-end-api service
    environment:
      POSTGRES_USER: admin
      POSTGRES_PASSWORD: password
      POSTGRES_DB: face-recognition-database-docker
      POSTGRES_HOST: postgres
    # Telling Docker to run whatever is in the postgres directory on our local machine. In this case, we will get tables generated for our database in the Docker container
    build: ./Back_End/postgres
    # The first 5432 represents the port on your local machine, the : represents forwarding, and the second 5432 represents the port of the container
    ports:
      - "5432:5432"

  # Front-end React User Interface
  react-ui:
    env_file:
    - ./Front_End/.env
    container_name: face-recognition-frontend
    build: ./Front_End
    command: npm start
    working_dir: /usr/src/Front_End
    ports:
      - "3001:3001"
    stdin_open: true
    environment:
      - CHOKIDAR_USEPOLLING=true
    volumes:
        - ./Front_End:/usr/src/Front_End
        # - /usr/src/Front_End/node_modules