We should not be able to invoke a StatusImage

Test custom health checker scenarios

Using a fake repo, which returns 429 once for each URI. The pull should fail since retry checker function never returns true, which disables retries.

Using a fake repo, which returns 429 once for each URI. The pull eventually should succeeds if retries work. "Success" here means we get "filesystem v

Test faulty runner pool, which is waiting on a non-existent docker network