CODEWITHSUNDEEP
dockerdocker-compose
Bertuz
Bertuz

Reputation: 2566

docker-compose does not accept my volumes declaration

I'm trying to use docker-compose. I started off by copying an example from the docker documentation:

version: '3'
services:
  web:
    image: nginx:alpine
    ports:
      - "80:80"

networks:
  webnet:

volumes:
  - type: volume
    source: mydata
    target: /data
    volume:
      nocopy: true
  - type: bind
    source: ./static
    target: /opt/app/static

but what I get is: ERROR: In file './docker-compose.yml', volume must be a mapping, not an array.

It looks to me something to do with an old version of docker-compose. So I tried to update my docker running on MacOs, but it's up to date. By checking the version this is what I get:

Matteos-MacBook-Pro-2:chateo matteo$ docker-compose -v   
docker-compose version 1.14.0, build c7bdf9e

shouldn't it be 1.17? I don't get it. Any hints?

Update

I've tried to replace the array with a key:value list:

volumes:
  mydata:
    type: volume
    source: mydata
    target: /data
    volume:
      nocopy: true
  static:
    type: bind
    source: ./static
    target: /opt/app/static

But what I get is the following:

Matteos-MacBook-Pro-2:chateo matteo$ docker-compose build
ERROR: The Compose file './docker-compose.yml' is invalid because:
volumes.static value Additional properties are not allowed ('source', 'type', 'target' were unexpected)
volumes.mydata value Additional properties are not allowed ('volume', 'source', 'type', 'target' were unexpected)

Upvotes: 7

Views: 20695

Answers (2)

Mathieu
Mathieu

Reputation: 1501

Using this syntax, the volume definition should be inside the service using it, see official documentation

version: "3.2"
services:
  web:
    image: nginx:alpine
    volumes:
      - type: volume
        source: mydata
        target: /data
        volume:
          nocopy: true
      - type: bind
        source: ./static
        target: /opt/app/static

  db:
    image: postgres:latest
    volumes:
      - "/var/run/postgres/postgres.sock:/var/run/postgres/postgres.sock"
      - "dbdata:/var/lib/postgresql/data"

volumes:
  mydata:
  dbdata:

Otherwise, you can declare a volume with specific driver like this:

version: "3.2"
volumes:
  mydata:
    driver: local
    driver_opts:
      o: uid=500,gid=500

Upvotes: 5

Bukharov Sergey
Bukharov Sergey

Reputation: 10185

Try to change volumes definition to something like this:

volumes:
  mydata:
    type: volume
    source: mydata
    target: /data
    volume:
      nocopy: true
  static:
    type: bind
    source: ./static
    target: /opt/app/static

I can be wrong, but volumes cant be array.

Upvotes: 0

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