Question 82385 in Docker Question posted in
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How to get a file in one container that is in another container? – Docker

I have a docker-compose.yml file that describes several containers.

I need to use a file in container C that is in container A.

Tell me, please, how can this be done? I don’t understand the examples from the documentation.

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2

Answers


  1. 0

    If files are under volume, you can access file with your server (root account probably).

    Else, you should first:

    docker cp container_a:/path/to/file /path/in/your/server
docker cp /path/in/your/server container_c:/path/to/file
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  2. 0

    1) using Docker volume
    Here share same asset-volume between two containers

    version: '3'
services:
  A:
    volumes:
      - asset-volume:/path/a/assets
  B:
    volumes:
      - asset-volume:/path/b/assets

volumes:
  asset-volume:
    1. Using a host directory
      Here share same host assets directory between two containers
    version: '3'
services:
  A:
    volumes:
      - ./assets:/path/a/assets
  B:
    volumes:
      - ./assets:/path/b/assets
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