eventing cronjob does not work

[gyliu513]

When I follow steps at https://github.com/knative/docs/blob/master/eventing/samples/cronjob-source/README.md to run cronjob sample, found that the image github.com/knative/eventing-sources/cmd/message_dumper:latest cannot be found, am I missing anything?

https://github.com/knative/docs/blob/master/eventing/samples/cronjob-source/service.yaml#L13

FYI @zxDiscovery @whynowy

[whynowy]

@gyliu513 - sorry, my bad, it should be ko apply -f service.yaml, I'll fix it.