feat: Secure GCP SA

.gitlab-ci.yml

@@ -205,7 +205,7 @@ destroy-psc:
     EC_DNS_ZONE: $EC_DNS_ZONE
   before_script:
     - |
-      echo $GCP_SA > gcp-sa.json
+      echo $GCP_SA | base64 -d > gcp-sa.json
       gcloud auth activate-service-account --key-file gcp-sa.json
       echo "Activate Service Account: OK"
       gcloud config set project $GCP_PROJECT_ID
@@ -262,7 +262,7 @@ destroy-gke:
   before_script:
     - |
       cd $TF_ROOT_GKE
-      echo $GCP_SA > gcp-sa.json
+      echo $GCP_SA | base64 -d > gcp-sa.json
   script:
     - |
       gitlab-terraform init