Migrate start-singleuser as well

Author: yuvipanda

docs/using/selecting.md

@@ -57,7 +57,7 @@ It contains:
 - Minimally functional Server (e.g., no LaTeX support for saving notebooks as PDFs)
 - `notebook`, `jupyterhub` and `jupyterlab` packages
 - A `start-notebook` script as the default command
-- A `start-singleuser.sh` script useful for launching containers in JupyterHub
+- A `start-singleuser` script useful for launching containers in JupyterHub
 - Options for a self-signed HTTPS certificate
 
 ### jupyter/minimal-notebook

images/base-notebook/Dockerfile

@@ -55,11 +55,12 @@ EXPOSE $JUPYTER_PORT
 CMD ["start-notebook"]
 
 # Copy local files as late as possible to avoid cache busting
-COPY start-notebook start-singleuser.sh /usr/local/bin/
+COPY start-notebook start-singleuser /usr/local/bin/
 COPY jupyter_server_config.py docker_healthcheck.py /etc/jupyter/
 
-# Symlink start-notebook to start-notebook for backwards compatibility
+# Symlink scripts to their older .sh variants for backwards compatibility
 RUN ln -s /usr/local/bin/start-notebook /usr/local/bin/start-notebook.sh
+RUN ln -s /usr/local/bin/start-jupyterhub /usr/local/bin/start-jupyterhub.sh
 
 # Fix permissions on /etc/jupyter as root
 USER root

images/base-notebook/start-notebook

@@ -5,13 +5,13 @@ import os
 import shlex
 import sys
 
-# If we are in a JupyterHub, we pass on to `start-singleuser.sh` instead so it does the right thing
+# If we are in a JupyterHub, we pass on to `start-singleuser` instead so it does the right thing
 if "JUPYTERHUB_API_TOKEN" not in os.environ:
     print(
-        "WARNING: using start-singleuser.sh instead of start-notebook to start a server associated with JupyterHub.",
+        "WARNING: using start-singleuser instead of start-notebook to start a server associated with JupyterHub.",
         file=sys.stderr,
     )
-    os.execvp("/usr/local/bin/start-singleuser.sh", sys.argv[1:])
+    os.execvp("/usr/local/bin/start-singleuser", sys.argv[1:])
 
 
 # Wrap everything in start.sh, no matter what

images/base-notebook/start-singleuser

@@ -0,0 +1,20 @@
+#!/usr/bin/env python -u
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+import os
+import shlex
+import sys
+
+command = ["/usr/local/bin/start.sh"]
+
+# set default ip to 0.0.0.0
+if "--ip=" not in os.environ.get("NOTEBOOK_ARGS", ""):
+    command.append("--ip=0.0.0.0")
+
+# Append any optional NOTEBOOK_ARGS we were passed in. This is supposed to be multiple args passed
+# on to the notebook command, so we split it correctly with shlex
+if "NOTEBOOK_ARGS" in os.environ:
+    command += shlex.split(os.environ["NOTEBOOK_ARGS"])
+
+# Execute the command!
+os.execvp(command[0], command)

images/base-notebook/start-singleuser.sh

@@ -25,7 +25,7 @@
             ["JUPYTERHUB_API_TOKEN=my_token"],
             "jupyterhub-singleuser",
             False,
-            ["WARNING: using start-singleuser.sh"],
+            ["WARNING: using start-singleuser"],
         ),
     ],
 )