Missing storage backend in example Docker Compose file

[H-Shay]

Problem Description
Osprey-ui-api service is missing env var OSPREY_EXECUTION_RESULT_STORAGE_BACKEND=minio (or whatever backend is being used). This causes the /scan api to fail with

bootstrap_execution_result_storage_service()\n                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/osprey/osprey_worker/src/osprey/worker/lib/storage/stored_execution_result.py\", line 512, in bootstrap_execution_result_storage_service\n    raise AssertionError('No storage backend registered')\nAssertionError: No storage backend registered"}

errors in the ui-api logs and the event stream to show no data.

To Reproduce
Steps to reproduce the behavior:

1. Run the example docker compose file as-is
2. Run query in UI
3. See error/ don't see event stream

Expected behavior
To see events in the event stream ui component.