Codeship cannot push image to Google Container Registry

I created a Service Account in the Google Cloud console to let Codeship push Docker images to Google Container Registry, but when I test it with jet steps --push it says I don't have permissions.

{StepFinished=step_name:"push_app" type:STEP_FINISHED_TYPE_ERROR}                                                                                                                 
Image Push error for image gcr.io/my-project/my-app:1499432530, denied: Unable to access the repository; please check that you have permission to access it

The service account already has full owner permissions to my account. Is there anything I need to check in the Google console or my Codeship configuration?

The service account needs permissions to the storage segment where the containers will be pushed. To fix this

• Log in to the Google Cloud Platform console

• Go to the Storage section

• Tick the corresponding storage segment and click Show information panel button in the top-right corner.

• Add the storage object administration permission to your service account.

You can then retry locally with jet steps --push.

StackExchange DevOps Q#1493, answer score: 1