feat(jupyterhub): support installing w/o longhorn

jupyterhub/jupyterhub-values.gomplate.yaml

@@ -131,7 +131,9 @@ singleuser:
     {{ else -}}
     type: dynamic
     dynamic:
-      storageClass: longhorn
+      {{ if env.Getenv "JUPYTERHUB_STORAGE_CLASS" -}}
+      storageClass: {{ .Env.JUPYTERHUB_STORAGE_CLASS }}
+      {{ end -}}
       storageAccessModes:
         - ReadWriteOnce
     {{ end -}}

jupyterhub/justfile

@@ -6,6 +6,7 @@ export JUPYTERHUB_OIDC_CLIENT_ID := env("JUPYTERHUB_OIDC_CLIENT_ID", "jupyterhub
 export JUPYTERHUB_OIDC_CLIENT_SESSION_IDLE := env("JUPYTERHUB_OIDC_CLIENT_SESSION_IDLE", "86400")
 export JUPYTERHUB_OIDC_CLIENT_SESSION_MAX := env("JUPYTERHUB_OIDC_CLIENT_SESSION_MAX", "604800")
 export JUPYTERHUB_NFS_PV_ENABLED := env("JUPYTERHUB_NFS_PV_ENABLED", "")
+export JUPYTERHUB_STORAGE_CLASS := env("JUPYTERHUB_STORAGE_CLASS", "")
 export JUPYTERHUB_VAULT_INTEGRATION_ENABLED := env("JUPYTERHUB_VAULT_INTEGRATION_ENABLED", "")
 export JUPYTER_PYTHON_KERNEL_TAG := env("JUPYTER_PYTHON_KERNEL_TAG", "python-3.12-24")
 export KERNEL_IMAGE_BUUN_STACK_REPOSITORY := env("KERNEL_IMAGE_BUUN_STACK_REPOSITORY", "buun-stack-notebook")
@@ -91,6 +92,7 @@ install:
             echo "Longhorn is not installed. Please install Longhorn first." >&2
             exit 1
         fi
+        JUPYTERHUB_STORAGE_CLASS=${JUPYTERHUB_STORAGE_CLASS:-longhorn}
         export JUPYTER_NFS_IP=${JUPYTER_NFS_IP:-}
         while [ -z "${JUPYTER_NFS_IP}" ]; do
             JUPYTER_NFS_IP=$(