Steps to reproduce:
a) Install OCP 4.6.6 (cluster bot)
b) Install Serving, Kourier following upstream instructions here as usual.
Launch a service in any ns:

apiVersion: serving.knative.dev/v1
kind: Service
metadata:
name: event-display
spec:
template:
spec:
containers:

• image: quay.io/openshift-knative/knative-eventing-sources-event-display

Revision gets stuck and no service pod comes up:

Name: event-display-00001
Namespace: default
Labels: serving.knative.dev/configuration=event-display
serving.knative.dev/configurationGeneration=1
serving.knative.dev/routingState=active
serving.knative.dev/service=event-display
Annotations: serving.knative.dev/creator: system:admin
serving.knative.dev/routes: event-display
serving.knative.dev/routingStateModified: 2020-12-02T16:01:15Z
API Version: serving.knative.dev/v1
Kind: Revision
Metadata:
Creation Timestamp: 2020-12-02T16:01:15Z
Generation: 1
Managed Fields:
API Version: serving.knative.dev/v1
Fields Type: FieldsV1
fieldsV1:
f:metadata:
f:annotations:
.:
f:serving.knative.dev/creator:
f:serving.knative.dev/routes:
f:serving.knative.dev/routingStateModified:
f:labels:
.:
f:serving.knative.dev/configuration:
f:serving.knative.dev/configurationGeneration:
f:serving.knative.dev/routingState:
f:serving.knative.dev/service:
f:ownerReferences:
.:
k:
Unknown macro: {"uid"}
:
.:
f:apiVersion:
f:blockOwnerDeletion:
f:controller:
f:kind:
f:name:
f:uid:
f:spec:
.:
f:containerConcurrency:
f:containers:
f:enableServiceLinks:
f:timeoutSeconds:
f:status:
.:
f:conditions:
f:observedGeneration:
Manager: controller
Operation: Update
Time: 2020-12-02T16:01:15Z
Owner References:
API Version: serving.knative.dev/v1
Block Owner Deletion: true
Controller: truehttps://knative.dev/docs/install/any-kubernetes-cluster​_
Kind: Configuration
Name: event-display
UID: 80261e6a-b302-41db-98a9-b0cef3f5b187
Resource Version: 46845
Self Link: /apis/serving.knative.dev/v1/namespaces/default/revisions/event-display-00001
UID: b7ae07f2-7f50-47ec-bd5b-0c2757cab632
Spec:
Container Concurrency: 0
Containers:
Image: quay.io/openshift-knative/knative-eventing-sources-event-display
Name: user-container
Readiness Probe:
Success Threshold: 1
Tcp Socket:
Port: 0
Resources:
Enable Service Links: false
Timeout Seconds: 300
Status:
Conditions:
Last Transition Time: 2020-12-02T16:01:15Z
Status: Unknown
Type: ContainerHealthy
Last Transition Time: 2020-12-02T16:01:15Z
Reason: ResolvingDigests
Status: Unknown
Type: Ready
Last Transition Time: 2020-12-02T16:01:15Z
Reason: ResolvingDigests
Status: Unknown
Type: ResourcesAvailable
Observed Generation: 1
Events: <none>