fix: JupyterHub spawn - switch to LocalProcessSpawner, fix password hash, eric user

- SimpleLocalProcessSpawner doesn't pass JUPYTERHUB_SERVICE_URL in JH 5.3.0
- LocalProcessSpawner handles env vars correctly
- Fixed eric password hash (bcrypt instead of PBKDF2)
- eric user created with admin rights
- JupyterLab accessible at https://jupyter.digitribe.fr
- Credentials: eric / Digitribe972

vre/jupyterhub/jupyterhub_config.py

@@ -1,6 +1,6 @@
 # JupyterHub configuration for Smart City VRE
 # Uses NativeAuthenticator with LocalProcessSpawner
-# Build: 2026-06-01-0915
+# Build: 2026-06-01-1600
 
 import sys as _sys
 
@@ -10,15 +10,17 @@ c.JupyterHub.hub_ip = '0.0.0.0'
 
 # Authenticator: Native (username/password signup + login)
 c.JupyterHub.authenticator_class = 'nativeauthenticator.NativeAuthenticator'
-c.Authenticator.admin_users = {'admin'}
+c.Authenticator.admin_users = {'admin', 'eric'}
 c.Authenticator.allow_all = True
 
-# Spawner: Simple local spawner (single-node, shared environment)
-c.JupyterHub.spawner_class = 'simple'
+# Spawner: LocalProcessSpawner
+# Note: SimpleLocalProcessSpawner doesn't pass JUPYTERHUB_SERVICE_URL correctly
+# in JupyterHub 5.3.0. LocalProcessSpawner handles this properly.
+c.JupyterHub.spawner_class = 'localprocess'
 c.Spawner.cmd = ['jupyterhub-singleuser']
 c.Spawner.default_url = '/lab'
 c.Spawner.start_timeout = 300
-c.Spawner.http_timeout = 120
+c.Spawner.http_timeout = 300
 
 # Database and cookies - use absolute path (4 slashes!)
 c.JupyterHub.cookie_secret_file = '/srv/jupyterhub/jupyterhub_cookie_secret'