Question 303854 in Docker Question posted in
The official documentation can be found here.

docker-compose.yml – configs section: Additional property content is not allowed

docker-compose.yml

version: "3.8"
services:
  test:
    image: busybox:latest
    configs:
      - source: cfg
        target: /opt/cfg.json
        mode: "0644"
configs:
  cfg:
    content: "{}"

docker compose -f docker-compose.yml up

validating /opt/docker-compose.yml: configs.cfg Additional property content is not allowed

Docker documentation on these docker-compose.yml sections:

Latest docker release is installed from official Docker apt repo. Versions:

Client: Docker Engine - Community
 Version:           24.0.7
 API version:       1.43
Server: Docker Engine - Community
 Engine:
  Version:          24.0.7
  API version:      1.43 (minimum version 1.12)
Docker Compose version v2.21.0
Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    And just to help somebody avoid unnecessary googling.

    Upgrading compose plugin installed using official docker apt repo:

    COMPOSE_VERSION="v2.23.3"
apt purge docker-compose-plugin
curl -SL "https://github.com/docker/compose/releases/download/${COMPOSE_VERSION}/docker-compose-linux-x86_64" -o /usr/libexec/docker/cli-plugins/docker-compose
chmod a+rx /usr/libexec/docker/cli-plugins/docker-compose

  2. 0

    Docker Compose 2.21.0 does not support this feature – you’ll need 2.23.0 at least, if not 2.23.1.

    See discussion at https://github.com/compose-spec/compose-spec/pull/429

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