fix: base64 invalid input

.gitlab-ci.yml

@@ -203,9 +203,10 @@ destroy-psc:
     EC_SERVICE_ATTACHMENT_URI: $EC_SERVICE_ATTACHMENT_URI
     EC_DNS_ZONE: $EC_DNS_ZONE
   before_script:
-    - echo $GCP_SA
-    - echo ${GCP_SA}
-    - echo $GCP_SA | base64 -di > gcp-sa.json
+    - echo "$GCP_SA"
+    - echo "${GCP_SA}"
+    - echo "$GCP_SA" | base64 -di > gcp-sa.json
+    - cat 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