Add `Rollup` bundler for the server

Change-Id: I38734b55ff80beeb9e0389b5a8e7c436a05477c3
diff --git a/.gitignore b/.gitignore
index 5acb236..8a1dffa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,7 +5,7 @@
 jaas-client/node_modules/
 jaas-client/dist/
 
-.env
+.env*
 dring.node
 jamid.node