Fixed: Startup building time

jupyterhub/compose.yml

@@ -15,3 +15,13 @@ services:
       - ../nbgrader/exchange:/srv/nbgrader/exchange 
       - ../nbgrader/courses:/srv/nbgrader/courses 
 
+  # Just the Hacky way to pull images at startup
+  # It just pulls the image but they wont startup
+  # speeds up first spawn dramatically
+  base:
+    image: jupyter/base-notebook:latest
+    entrypoint: ['echo hi']
+
+  datasciene:
+    image: jupyter/datasciene-notebook:latest
+    entrypoint: ['echo hi']

jupyterhub/jupyterhub_config.py

@@ -88,6 +88,9 @@ c.JupyterHub.spawner_class = DockerSpawner
 # Spawn Containers from this Image
 c.DockerSpawner.image = os.environ.get("NOTEBOOK_IMAGE", "jupyter/base-notebook:latest")
 
+# Spawn this "version" of the Notebook
+c.DockerSpawner.default_url = os.environ.get("SPAWNER_DEFAULT_URL", "/tree")
+
 # Connect Containers to this network
 network_name = os.environ.get("DOCKER_NETWORK_NAME", "stack_default")
 # Let docker manage network communications