Fix production image to be the built one

Author: maxkadel

ops/production-deploy.tmpl.yaml

@@ -492,9 +492,9 @@ nginx:
   service:
     type: ClusterIP
   image:
-    registry: registry.gitlab.com
-    repository: notch8/scripts/bitnami-nginx
-    tag: 1.21.5-debian-10-r4
+    registry: ghcr.io
+    repository: "$REPO_LOWER/nginx"
+    tag: "$TAG"
   serverBlock: |-
     upstream rails_app {
       server {{ .Values.global.hyraxHostName }};