YAML Anchor / Fragments Support

[adaliszk]

Version

v1.0.6

YAML file where the error occurs

name: fragment-example

x-shared-links: &shared-links
  links:
    - "foo:foo.example.svc.cluster.local"
    - "bar:bar.example.svc.cluster.local"

services:
  foo:
    image: traefik/whoami:v1.10

  bar:
    image: traefik/whoami:v1.10
    
  app_foo:
    image: traefik/whoami:v1.10
    <<: *shared-links

  app_bar:
    image: traefik/whoami:v1.10
    <<: *shared-links

Command used to run

npx dclint .

Additional context

• https://docs.docker.com/reference/compose-file/fragments
• https://yaml.org/spec/1.2.2/#3222-anchors-and-aliases

Current behavior (console output)

ComposeValidationError: instancePath="/services/foo", schemaPath="#/additionalProperties", message="Validation error: must NOT have additional properties".  invalid-schema

Expected behavior

The Anchors / Fragments should be resolved before validating the schema, and thus the error would not tell that additional properties are not allowed, as there are no actual keys like << being used after parsing the YAML.

[zavoloklom]

🎉 This issue has been resolved in version 1.0.7 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[zavoloklom]

@adaliszk Hi! I fixed it in v1.0.7, but there are some limitations - https://github.com/zavoloklom/docker-compose-linter?tab=readme-ov-file#anchor-handling

Please let me know if something goes wrong.

[adaliszk]

Thank you very much!
It looks promising; I will try to make time next week to add the tool as a listing step in my current project!