docker-compose.yml 中 {} 是什么?

[ruandao]

感觉应该是占位符, 但是, 如果不改他, 直接运行了, 具体的值是什么?

譬如:

version: '3'

volumes:
  production_postgres_data: {}
  production_postgres_data_backups: {}
  production_traefik: {}
redis:
  image: redis:5.0
awscli:
  build:
    context: .
    dockerfile: ./compose/production/aws/Dockerfile
  env_file:
    - ./.envs/.production/.django
volumes:
  - production_postgres_data_backups:/backups      

注意:

    volumes:
  - production_postgres_data_backups:/backups      

backups 具体指向的是哪里?

[mritd]

/var/lib/docker/volumes/NAME/_data