Update .gitlab-ci.yml file

.gitlab-ci.yml

 stages:
   - build
-  - deploy
   - sync
 
 variables:
@@ -9,7 +8,7 @@ variables:
 
 # start an OpenShift Job that will build the Spack environment
 .deploy-build-environment:
-  stage: deploy
+  stage: build
   script:
     # login and select project in openshift
     - oc login "$OPENSHIFT_SERVER" --token="$OPENSHIFT_TOKEN"