🐛 Detect image issues. (#678)

Detect malformed _fqin_ and image pull backoff. When detected, the task
is failed and reported with error and event.

Reported as:
```
events:
    - kind: ImageError
      reason: ImagePullBackOff
      last: 2024-06-27T11:04:14.088026727-07:00
    - kind: PodDeleted
      count: 1
      last: 2024-06-27T11:04:14.126638809-07:00
errors:
    - severity: Error
      description: 'Container (addon) failed: ImagePullBackOff'
```

Detects:
- CrashLoopBackOff,
- ImagePullBackOff
- CreateContainerConfigError
- InvalidImageName
- CreateContainerError

closes: #677

---------

Signed-off-by: Jeff Ortel <jortel@redhat.com>

task/manager.go

@@ -50,6 +50,7 @@ const (
 const (
 	AddonSelected = "AddonSelected"
 	ExtSelected   = "ExtensionSelected"
+	ImageError    = "ImageError"
 	PodNotFound   = "PodNotFound"
 	PodCreated    = "PodCreated"
 	PodRunning    = "PodRunning"
@@ -945,7 +946,10 @@ func (m *Manager) podEvent(pod *core.Pod) (events []Event, err error) {
 
 // podLogs - get and store pod logs as a Files.
 func (m *Manager) podLogs(pod *core.Pod) (files []*model.File, err error) {
-	for _, container := range pod.Spec.Containers {
+	for _, container := range pod.Status.ContainerStatuses {
+		if container.State.Waiting != nil {
+			continue
+		}
 		f, nErr := m.containerLog(pod, container.Name)
 		if nErr == nil {
 			files = append(files, f)
@@ -1233,6 +1237,23 @@ func (r *Task) podPending(pod *core.Pod) {
 		status,
 		pod.Status.ContainerStatuses...)
 	for _, status := range status {
+		state := status.State
+		if state.Waiting != nil {
+			waiting := state.Waiting
+			reason := strings.ToLower(waiting.Reason)
+			if r.containsAny(reason, "invalid", "error", "backoff") {
+				r.Error(
+					"Error",
+					"Container (%s) failed: %s",
+					status.Name,
+					waiting.Reason)
+				mark := time.Now()
+				r.Terminated = &mark
+				r.Event(ImageError, waiting.Reason)
+				r.State = Failed
+				return
+			}
+		}
 		if status.Started == nil {
 			continue
 		}
@@ -1548,6 +1569,17 @@ func (r *Task) attach(file *model.File) {
 		})
 }
 
+// containsAny returns true when the str contains any of substr.
+func (r *Task) containsAny(str string, substr ...string) (matched bool) {
+	for i := range substr {
+		if strings.Contains(str, substr[i]) {
+			matched = true
+			break
+		}
+	}
+	return
+}
+
 // Event represents a pod event.
 type Event struct {
 	Type     string