Context deadline exceeded message is shown when no valid dockerhub image is set for new tenant

[bexsoft]

When you try to create a new tenant with an incorrect / empty dockerhub image, a timeout error is thrown:

"Get "https://dl.min.io/server/minio/release/linux-amd64/": context deadline exceeded (Client.Timeout exceeded while awaiting headers)"

Also this error is being sent as a 200 response so the application thinks that everything went OK.

We need to set a default image for these cases and fix the error response code to be something different than 200