By default, Cloudron users have `readwrite` access policy.
If you'd like to change it, you should create a respective policy by following [Minio documentation](https://min.io/docs/minio/linux/administration/identity-access-management/policy-based-access-control.html)
After that you should add the variable MINIO_IDENTITY_OPENID_ROLE_POLICY in /app/data/env.sh, e.g.