Two related units of work landing together:
**p2-release-windows-image** — adds a `release_windows` job to
`.github/workflows/release.yml` so that cutting a tag publishes
`flutter-windows:<flutter-version>` to Docker Hub, GHCR, and Quay.io
alongside the existing `flutter-android` image. Implementation details:
- Plain `docker build` with multiple `--tag`/`--label` flags parsed from
`docker/metadata-action` outputs, then `docker push` per
registry-prefixed tag. `docker/build-push-action` is not viable on
Windows containers ([issue
#18](https://github.com/docker/build-push-action/issues/18)) and
buildkit's experimental WCOW worker is not available on hosted runners.
**p1-fix-windows-ci-tests archive** — moves the completed change to
`openspec/changes/archive/2026-05-10-p1-fix-windows-ci-tests/` and
promotes the `windows-image-testing` capability spec to
`openspec/specs/`. Also picks up the refined `flutter doctor`
requirement merged from #442.
---------
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-authored-by: verified-commit[bot] <180343340+verified-commit[bot]@users.noreply.github.com>
Eligio Mariño