diff --git a/docker-compose.yml b/docker-compose.yml
index 47bfeab..241b6df 100755
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -35,6 +35,7 @@ services:
       # Bind Docker volume on host for JupyterHub database and cookie secrets
       - "data:${DATA_VOLUME_CONTAINER}"
       - "./jupyterhub_config.py:/srv/jupyterhub/jupyterhub_config.py"
+      - "/home/math/:/home/"
     ports:
       - "8000:8000"
     links:
diff --git a/jupyterhub_config.py b/jupyterhub_config.py
index 8167f45..7c9cf68 100755
--- a/jupyterhub_config.py
+++ b/jupyterhub_config.py
@@ -3,19 +3,24 @@
 
 # Configuration file for JupyterHub
 import os
+from subprocess import check_call
 
 c = get_config()
 
+# Spawner dropdown menu?
+enable_options=True
 # We rely on environment variables to configure JupyterHub so that we
 # avoid having to rebuild the JupyterHub container every time we change a
 # configuration parameter.
 
 # Spawn single-user servers as Docker containers
-c.JupyterHub.spawner_class = 'dockerspawner.DockerSpawner'
+c.JupyterHub.spawner_class = spawner = 'dockerspawner.DockerSpawner'
+
+# define some task to do on startup
+
 # Spawn containers from this image (or a whitelist)
-#c.DockerSpawner.container_image = "jupyter/datascience-notebook:7254cdcfa22b"
-c.DockerSpawner.container_image = os.environ['DOCKER_NOTEBOOK_IMAGE']
-enable_options=False
+#c.DockerSpawner.image = "jupyter/datascience-notebook:7254cdcfa22b"
+c.DockerSpawner.image = os.environ['DOCKER_NOTEBOOK_IMAGE']
 if enable_options:
     # if whitelist enabled, the .container_image will be ignored in favor of the options below:
     c.DockerSpawner.image_whitelist = {'fenics': "jupyterhub-user", 
@@ -34,7 +39,7 @@ spawn_cmd = os.environ.get('DOCKER_SPAWN_CMD', "start-singleuser.sh")
 c.DockerSpawner.extra_create_kwargs.update({ 'command': spawn_cmd })
 
 # Memory limit
-c.Spawner.mem_limit = '2G'  # RAM limit
+c.Spawner.mem_limit = '1G'  # RAM limit
 
 # Connect containers to this Docker network
 network_name = os.environ['DOCKER_NETWORK_NAME']
@@ -56,7 +61,7 @@ c.DockerSpawner.notebook_dir = notebook_dir
 c.DockerSpawner.volumes = { 'hub-user-{username}': notebook_dir, 
                             'ro_shared_volume':{"bind": '/home/jovyan/shared_volume_ro', "mode": "ro"},
                             'rw_shared_volume':{"bind": '/home/jovyan/shared_volume_rw', "mode": "rw", "propagation": "rshared"},
-                            '/home/shared/':'/home/jovyan/shared_directory/' } 
+                            '/home/math/':'/home/jovyan/shared_directory/' } 
 
 # volume_driver is no longer a keyword argument to create_container()
 # c.DockerSpawner.extra_create_kwargs.update({ 'volume_driver': 'local' })
@@ -107,7 +112,8 @@ c.JupyterHub.db_url = 'postgresql://postgres:{password}@{host}/{db}'.format(
 # Whitlelist users and admins
 c.Authenticator.whitelist = whitelist = set()
 c.Authenticator.admin_users = admin = set()
-c.JupyterHub.admin_access = True
+# Allow admin users to log into other single-user servers (e.g. for debugging, testing)?  As a courtesy, you should make sure your users know if admin_access is enabled.
+c.JupyterHub.admin_access = True 
 pwd = os.path.dirname(__file__)
 with open(os.path.join(pwd, 'userlist')) as f:
     for line in f:
@@ -121,6 +127,9 @@ with open(os.path.join(pwd, 'userlist')) as f:
             if len(parts) > 1 and parts[1] == 'admin':
                 admin.add(name)
 
+# Whitelist test
+# c.Authenticator.whitelist = {'pilosovmnet', 'pilosovm', 'michael'}
+
 # Run script to automatically stop idle single-user servers as a jupyterhub service.
 c.JupyterHub.services = [
     {
diff --git a/traefik.toml b/traefik.toml
deleted file mode 100755
index 69d1d28..0000000
--- a/traefik.toml
+++ /dev/null
@@ -1,40 +0,0 @@
-logLevel = "DEBUG"
-defaultEntryPoints = ["http", "https"]
-
-[api]
-dashboard = true
-entrypoint = "webentry"
-
-[docker]
-domain ="consistentbayes.com"
-watch = true
-exposedbydefault = false
-endpoint = "unix:///var/run/docker.sock"
-
-[entryPoints]
-  [entryPoints.http]
-  address = ":80"
-    [entryPoints.http.redirect]
-    entryPoint = "https"
-  [entryPoints.https]
-  address = ":443"
-    [entryPoints.https.tls]
-[entrypoints.webentry]
-    address = ":8080"
-    [entrypoints.webentry.auth]
-      [entrypoints.webentry.auth.basic]
-        users = ["admin:$apr1$Wc4H94je$1rkT26mDWGkQ/UVDLc7E9."]
-
- 
-[acme]
-  email="consistentbayes@gmail.com"
-  storage="secrets/acme.json"
-  entryPoint="https"
-  acmeLogging=true
-  onDemand=false
-  OnHostRule=true
-
-[acme.httpChallenge]
-  entryPoint = "http"
-  provider = "namecheap"
-  delayBeforeCheck = 0