Use LE staging in CI, no need to source .flux.env

.gitlab-ci.yml

@@ -307,8 +307,7 @@ setup-openappstack:
     # TODO: I set --no-install-openappstack to skip the old installation procedure, should be removed eventually
     - python3 -m openappstack $HOSTNAME install --install-kubernetes --no-install-openappstack
     # Customize env file, remove all comments and empty lines
-    - sed "s/1.2.3.4/$IP_ADDRESS/; s/example.org/$FQDN/; s/acme_staging=false/acme_staging=true/; s/acme-staging/acme/; /^\s*#.*$/d; /^\s*$/d" install/.flux.env.example >> ${CLUSTER_DIR}/.flux.env
-    - set -o allexport; source ${CLUSTER_DIR}/.flux.env; set +o allexport
+    - sed "s/1.2.3.4/$IP_ADDRESS/; s/example.org/$FQDN/; s/acme_staging=false/acme_staging=true/; s/acme/acme-staging/; /^\s*#.*$/d; /^\s*$/d" install/.flux.env.example >> ${CLUSTER_DIR}/.flux.env
     # Deploy secret/oas-cluster-variables
     - cp install/kustomization.yaml ${CLUSTER_DIR}
     - kubectl apply -k ${CLUSTER_DIR}