docker-compose.yaml pins quay.io/minio/minio, which is no longer published

[papamoose]

docker compose pull fails with:

failed to resolve reference "quay.io/minio/minio:latest":
unexpected status from HEAD request to
https://quay.io/v2/minio/minio/manifests/latest: 401 Unauthorized

The minio service in docker-compose.yaml uses image: quay.io/minio/minio. MinIO stopped publishing free images to quay.io and Docker Hub in October 2025. All tags of quay.io/minio/minio return 401, and docker.io/minio/minio returns 404.

As a result, a user cannot pull the object storage backend for the file server from the compose file in this repository.

Proposed fixes:

• Replace the image with a maintained build of the MinIO server (for example coollabsio/minio), or
• Document a supported S3-compatible endpoint and pin a working image.