Packer uses the Application Default Credentials to connect with Google Cloud.
Run this command to create the credentials and login with the correct account.
gcloud auth application-default login
Replace [your-project] in the next snippet with the ID of the project we created for you (or your own project).
export PROJECT=[your-project]
To build the base image, run this snippet.
packer build -var project_id=$PROJECT base.pkr.hcl
You'll first need to get the image pull secret (download from https://cloud.redhat.com/openshift/create/local), and put into the assets directory as pull-secret.txt.
Once you have the pull-secret.txt, run this command to build the image:
packer build -var project_id=$PROJECT machine.pkr.hcl
To check if the image is ready, run:
gcloud compute images list --project $PROJECT --no-standard-images