Docker Compose Default Variables

[gaving]

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A Mend.io-hosted app

If you're self-hosting Renovate, tell us which platform (GitHub, GitLab, etc) and which version of Renovate.

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Hi! 👋

Spent a couple of hours on this at work and figured I'd ask - wondering if my understanding of #11891 is correct and I can't seem to reproduce what I think should be happening:-

Reproduction repo:-

https://github.com/gaving/renovate-test

Specifically:

services:
  traefik:
    image: docker.io/traefik:${TRAEFIK_TAG:-saintmarcelin}
    command:

Renovate logs:-

https://developer.mend.io/github/gaving/renovate-test/-/job/5488559f-ced3-4dac-afcf-0897a46e4330

I'd expect an open MR e.g. with

image: docker.io/traefik:${TRAEFIK_TAG:-saintmarcelin@sha256:6341b98aec5ec8969b99e9730f4c5b22cca3103d42b6bbe4b7a3c910758fe565}

Am I missing something?

Logs (if relevant)

Logs

docker-compose": [
      {
        "deps": [
          {
            "skipReason": "invalid-name",
            "replaceString": "docker.io/traefik:${TRAEFIK_TAG:-saintmarcelin}",
            "autoReplaceStringTemplate": "{{depName}}{{#if newValue}}:{{newValue}}{{/if}}{{#if newDigest}}@{{newDigest}}{{/if}}",
            "datasource": "docker",
            "updates": []
          }
        ],
        "packageFile": "docker-compose.yml"
      }