docker-compose.yml

# Docker-compose file for full stack application
version: "3.7"

services:
  client:
    image: node:12-stretch # Pulls image from Docker Hub
    container_name: client # Names running container 'client'
    working_dir: /app # Sets working dir
    volumes:
      - ./client:/app # Binds './client' dir to '/app' inside container
    ports:
      - 3001:3000 # Binds port 3000 inside container to host's 3001 port
    networks:
      - sandbox # Adds container to sandbox network
    command: npm start # Sets the container command
    stdin_open: true # Needed for interactivity with terminal so CRA doesn't close upon starting
  proxy:
    image: nginx # Pulls image from Docker Hub
    container_name: proxy # Names the running container
    volumes:
      - ./proxy/default.conf:/etc/nginx/conf.d/default.conf # Adds default.conf file to location in nginx
      - static_files:/var/www/static # Bind volume to share static files from Django to proxy
    ports:
      - 80:80 # Binds container http port to host http port
    networks:
      - sandbox # Adds container to sandbox network
  server:
    build: ./server # Sets build context. Will build Dockerfile.
    image: server # Tags built image with 'server' tag
    container_name: server #  Names container server
    depends_on:
      - db
    command: ./manage.py runserver 0.0.0.0:8000 # Runs the development server
    entrypoint: /scripts/entrypoint.sh # Runs this script upon starting container
    environment: # Sets the environmental variables in the container for connection with DB
      - POSTGRES_API_HOST=${POSTGRES_API_HOST:-db}
      - POSTGRES_API_NAME=${POSTGRES_API_NAME:-api}
      - POSTGRES_API_USER=${POSTGRES_API_USER:-lempira}
      - POSTGRES_API_PASSWORD=${POSTGRES_API_PASSWORD:-changeme1234}
      - SERVER_SECRET_KEY=${SERVER_SECRET_KEY:-changeme1234}
    volumes:
      - ./server/src:/app # Binds volume in './server' to '/app' in container
      - ./server/scripts/entrypoint.sh:/scripts/entrypoint.sh # Adds entrypoint script to container
      - static_files:/app/static # Bind volume to share static files from Django to proxy
    ports:
      - 8001:8000 # Binds port 8001 in container to port 8000 in host
    networks:
      - sandbox # Adds container to sandbox network
  db:
    image: postgres:12 # Pulls image from Docker hub
    container_name: db # Names running container
    restart: always # Will automatically restart container if it stop.
    environment: # Sets the environmental variables in the container
      - POSTGRES_PASSWORD=${POSTGRES_API_HOST:-changeme1234}
      - POSTGRES_API_HOST= ${POSTGRES_API_HOST:-db}
      - POSTGRES_API_NAME=${POSTGRES_API_NAME:-api}
      - POSTGRES_API_USER=${POSTGRES_API_USER:-lempira}
      - POSTGRES_API_PASSWORD=${POSTGRES_API_PASSWORD:-changeme1234}
    volumes:
      - postgres_data:/var/lib/postgresql/data/ # Creates named volumes to store DB data.
      - ./db/scripts:/docker-entrypoint-initdb.d/ # Places init scripts in location where PG container will execute them on init.
    ports:
      - 5432:5432 # Binds PG DB port in container to same port in host.
    networks:
      - sandbox # Adds container sandbox network
  dbadmin:
    image: dpage/pgadmin4 # Pulls image from Docker Hub
    container_name: dbadmin # Sets container name
    environment: # Sets environmental variables inside container
      - PGADMIN_DEFAULT_EMAIL=${PGADMIN_DEFAULT_EMAIL:-lempira@email.com}
      - PGADMIN_DEFAULT_PASSWORD=${PGADMIN_DEFAULT_PASSWORD:-changeme1234}
    ports:
      - 5050:80 # Binds port 80 in container to host port 5050. Port 80 already used by nginx
    networks:
      - sandbox # Adds container sandbox network

volumes:
  postgres_data: # Create postgres volume to store DB data
  static_files: # Create static directory to share between Django and proxy

networks: # Creates the 'sandbox' network to link all containers.
  sandbox:
    name: sandbox