How to authenticate with a Google Service Account in Jenkins pipeline

I couldn't get the 'Google Service Account from private key' working, but using the 'Secret File' type of credential in Jenkins, and uploaded my google service account JSON works.

You need to upload your Sevice Account JSON file as a secret file. Then:

withCredentials([file(credentialsId: 'key-sa', variable: 'GC_KEY')]) {
    sh("gcloud auth activate-service-account --key-file=${GC_KEY}")
    sh("gcloud container clusters get-credentials prod --zone northamerica-northeast1-a --project ${project}")
  }