[BUG] Docker down endpoint does not fail when a non-existent project is provided

[Archi657]

Bug Description

The [DELETE] /api/vps/v1/virtual-machines/{virtualMachineId}/docker/my-docker-project/down endpoint is returning a 200 status code when trying to delete a project which does not exist at all.

Steps to Reproduce

1. Delete request to '/api/vps/v1/virtual-machines/{virtualMachineId}/docker/{my-docker-project}/down'
2. Write a non existant docker project
3. Receive 200 status

Expected Behavior

404 not found for project not found would be useful

Actual Behavior

Status 200 received with a "started" state.

Screenshots

Additional Context

When an incorrect virtualMachineId is used, returning a 403 Forbidden is helpful. However, returning a 200 OK when nothing is actually shut down can be misleading, as it suggests the process succeeded when no action was performed.