docker-compose.yml

version: '3.3'

services:
  postgres:
    image: postgres:13
    environment:
     - POSTGRES_DB=my_db
     - POSTGRES_USER=root
     - POSTGRES_PASSWORD=123456
    ports:
      - '5432:5432'
    volumes:
      - postgres_data:/var/lib/postgresql/data
  pgadmin:
    image: dpage/pgadmin4
    environment:
     - PGADMIN_DEFAULT_EMAIL=root@admin.com
     - PGADMIN_DEFAULT_PASSWORD=root
    ports:
     - '5050:80'
volumes:
  postgres_data: {}



# version: '3.3'

# services:
#   postgres:
#     image: postgres:13
#     environment:
#      - POSTGRES_DB=${POSTGRES_DB}
#      - POSTGRES_USER=${POSTGRES_USER}
#      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
#     ports:
#       - '5432:5432'
#     volumes:
#       - postgres_data:/var/lib/postgresql/data
#   pgadmin:
#     image: dpage/pgadmin4
#     environment:
#      - PGADMIN_DEFAULT_EMAIL=${PGADMIN_DEFAULT_EMAIL}
#      - PGADMIN_DEFAULT_PASSWORD=${PGADMIN_DEFAULT_PASSWORD}
#     ports:
#      - '5050:80'
# volumes:
#   postgres_data: {}