docker-compose.yml

version: '3'

services:
  flask_task:
    build: ./ #Where Docker file is
    container_name: flask-task
    ports:
      - '5000:5000'
    environment:
      - DB_URL=postgresql://pg_user:pg_password@pg_db:5432/flask_task
#    volumes:
#      - .:/usr/src/app
    expose:
      - 5000
    depends_on:
      - pg_db

  pg_db:
    restart: always
    image: postgres
    volumes:
      - ./pg_db:/var/lib/postgresql/data
    ports:
      - '5432:5432'
    environment:
      - POSTGRES_DB=flask_task
      - POSTGRES_USER=pg_user
      - POSTGRES_PASSWORD=pg_password
    container_name: pg_db

  pgadmin:
    container_name: pgadmin4_container
    restart: always
    image: dpage/pgadmin4
    depends_on:
      - pg_db
    environment:
      - PGADMIN_DEFAULT_EMAIL=your_email
      - PGADMIN_DEFAULT_PASSWORD=email_password # если сменить здесь, то нужно удалить контентер
    ports:
      - '5050:80'

  nginx:
    build: ./nginx
    ports:
      - 80:80
    volumes:
      - ./static:/home/web/default/static
    depends_on:
      - flask_task
      - pgadmin