To Terraform or not to Terraform
As we mentioned earlier, Cloud Run is a fully managed Google Cloud service that blurs the line between infrastructure and application code. Terraform is designed to provision cloud infrastructure. For example, if a developer updates the code of the Cloud Run service container image and a new image is built, the infrastructure – that is, the Cloud Run service – has not changed. Thus, upon rerunning Terraform, it does not detect any difference and does not deploy a new version of the Cloud Run service. We could explicitly update the version of the container image every time we update the code, then specify the version as part of the container image, or we can use something else to deploy Cloud Run services.
For example, we can use the Google Cloud CLI. (You can read more about it here: https://cloud.google.com/sdk/gcloud/reference/run/deploy.) The following gcloud commands are equivalent to the Terraform code in the cloudrun.tf file:
