docker-compose.yaml

version: '3.8'
name: bd2_tpo
services:
  postgres:
    image: postgres
    container_name: ${POSTGRES_CONTAINER_NAME}
    env_file:
      - .env
    environment:                                  # DB credentials
      - POSTGRES_DB=${POSTGRES_DB}
      - POSTGRES_USER=${POSTGRES_USER}
      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
    ports:
      - ${POSTGRES_PORT}:5432
    volumes:
      # Para scripts de inicialización, todo lo que esté en docker-entrypoint-initdb.d se va a ejecutar solo si data esta vacío
      # https://hub.docker.com/_/postgres
      # Esto es un bind mount (no un volumen)
      # <path_host>:<path_contenedor>:<opciones>
      - ./migrations/schema.sql:/docker-entrypoint-initdb.d/init.sql  # initial schema (executes sql files in first start)
      # <nombre_volumen>:<path_en_contenedor>:<opciones>
      - bd2_tpo_postgres_data:/var/lib/postgresql/data                    # persistent data (stored in host machine) 
      - bd2_tpo_pg_to_mongo_data:${PG_TO_MONGO_DATA_DIR}                      # TSV files to be imported to mongo
    healthcheck:
      test: ["CMD", "pg_isready", "-U", "postgres"]
      interval: 5s
      timeout: 4s
      retries: 5
      start_period: 10s
      start_interval: 2s
  mongo:
    image: mongo
    container_name: ${MONGO_CONTAINER_NAME}
    env_file:
      - .env
    environment:
      - MONGO_INITDB_ROOT_USERNAME=${MONGO_USER}
      - MONGO_INITDB_ROOT_PASSWORD=${MONGO_PASSWORD}
    ports:
      - ${MONGO_PORT}:27017
    volumes: 
      - bd2_tpo_mongo_data:/data/db                               # persistent data (stored in host machine)
      - bd2_tpo_pg_to_mongo_data:${PG_TO_MONGO_DATA_DIR}              # TSV files to be imported to mongo
    # https://docs.docker.com/compose/compose-file/05-services/#healthcheck
    # https://docs.docker.com/engine/reference/builder/#healthcheck
    # healthcheck:
    #   test: [ "CMD", "mongosh --eval", "'db.runCommand(\"ping\").ok'", "--quiet"]
    #   interval: 1m30s #Tiempo entre intentos
    #   timeout: 10s #Tiempo a partir del cual considera que el intento fallo
    #   retries: 3 #cantidad de intentos 
    #   start_period: 40s #tiempo hasta empezar a contar los intentos fallidos (antes intenta por si se levanta rapido)
    #   start_interval: 5s #tiempo entre los primeros intentos 
      
  server:
    build: ./api/.
    container_name: ${SERVER_CONTAINER_NAME}
    ports:
      - ${EXPRESS_PORT}:8000
    #https://docs.docker.com/compose/environment-variables/env-file/
    command: npm start
    env_file: 
      - .env
    environment:
      - POSTGRES_HOST=${POSTGRES_CONTAINER_NAME}
      - POSTGRES_PORT=5432
      - MONGO_PORT=27017
      - MONGO_HOST=${MONGO_CONTAINER_NAME}
    volumes:
      # Esto es un bind
      - ./api/:/usr/src/app
      # Esto es un volumen
      - bd2_tpo_node_modules:/usr/src/app/node_modules
    # https://docs.docker.com/compose/compose-file/05-services/#depends_on
    depends_on:
      postgres:
        condition: service_healthy
      mongo:
        condition: service_started

# docker compose down --rmi local -v
# docker compose up

volumes:
  bd2_tpo_postgres_data:
  bd2_tpo_mongo_data: 
  bd2_tpo_node_modules:
  bd2_tpo_pg_to_mongo_data: