diff --git a/README.ruben.md b/README.ruben.md
index 549c7fcf..5485d15b 100644
--- a/README.ruben.md
+++ b/README.ruben.md
@@ -30,6 +30,11 @@ To run it we provide the port to publish, and need to map the volumes of mongo f
 
 `docker run -it --env-file .env.production --publish 8001:8000 -v /tmp/dp/db:/data/db -v /tmp/dp/configdb:/data/configdb --name dp_app digitalplayground`
 
+
+Export the image using:
+
+`docker save digitalplayground > dp_docker.tar`
+
 ## s3 storage
 
 Gebruik s3cmd om bucket in te stellen.
diff --git a/server/models/user.js b/server/models/user.js
index 7cb65cf4..045aeafb 100644
--- a/server/models/user.js
+++ b/server/models/user.js
@@ -224,4 +224,5 @@ userSchema.statics.EmailConfirmation = EmailConfirmationStates;
 userSchema.index({ username: 1 }, { collation: { locale: 'en', strength: 2 } });
 userSchema.index({ email: 1 }, { collation: { locale: 'en', strength: 2 } });
 
+
 export default mongoose.model('User', userSchema);
diff --git a/server/server.js b/server/server.js
index 2ff9d0aa..61168412 100644
--- a/server/server.js
+++ b/server/server.js
@@ -191,6 +191,10 @@ app.use('/api', (error, req, res, next) => {
 
 // overview of users:
 app.get('/users', (req, res) => {
+  User.collection.getIndexes().then((indexes) =>{
+
+    console.log('indexes', indexes);
+  })
   // let results = [];
   User.find({}).sort({ createdAt: -1 }).exec()
   .then((users) => {