Replace MinIO with Garage in deployment example

[krystofkomanec]

No description provided.

[Copilot]

Pull request overview

This PR updates the local Docker Compose deployment example to use Garage as the S3-compatible object storage backend instead of MinIO, including bootstrap automation and documentation updates for the new setup.

Changes:

• Replace MinIO service/configuration with a Garage service plus a garage.toml config.
• Update S3-related defaults in example.env and config/application.yml, and adjust the bootstrap script to initialize Garage (layout, bucket, key, permissions).
• Refresh README instructions, verification checklist, and troubleshooting guidance for the Garage-backed setup.

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
docker-compose.yml	Swaps MinIO for Garage, adds Garage config mount and S3 env propagation to app services.
config/garage.toml	Introduces single-node local POC configuration for Garage (S3 + admin APIs).
create-bucket.sh	Replaces MinIO bucket creation with Garage bootstrap (layout/bucket/key/allow).
example.env	Replaces MinIO version with Garage version and adds S3 + Garage secret defaults.
config/application.yml	Updates S3 credentials/region and documents the host-reachable S3 endpoint intent.
README.md	Updates docs from MinIO to Garage, adds quick start + verification + troubleshooting.
.gitignore	Ignores Garage local state directories under garage-data/.
garage-data/.gitkeep	Keeps the optional local Garage data directory present in the repo.

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