Jupyter Notebook deprecation -> default to JupyterLab

Makefile

@@ -128,7 +128,6 @@ cont-rm-all: ## remove all containers
 
 
 
-dev/%: DARGS?=-e JUPYTER_ENABLE_LAB=yes
 dev/%: PORT?=8888
 dev/%: ## run a foreground container for a stack
 	docker run -it --rm -p $(PORT):8888 $(DARGS) $(OWNER)/$(notdir $@)

base-notebook/start-notebook.sh

@@ -4,6 +4,10 @@
 
 set -e
 
+# The Jupyter command to launch
+# JupyterLab by default
+JUPYTER_CMD="${JUPYTER_CMD:=lab}"
+
 if [[ -n "${JUPYTERHUB_API_TOKEN}" ]]; then
     echo "WARNING: using start-singleuser.sh instead of start-notebook.sh to start a server associated with JupyterHub."
     exec /usr/local/bin/start-singleuser.sh "$@"
@@ -15,10 +19,8 @@ if [[ "${RESTARTABLE}" == "yes" ]]; then
 fi
 
 if [[ -n "${JUPYTER_ENABLE_LAB}" ]]; then
-    # shellcheck disable=SC1091,SC2086
-    exec /usr/local/bin/start.sh ${wrapper} jupyter lab ${NOTEBOOK_ARGS} "$@"
-else
     echo "WARNING: Jupyter Notebook deprecation notice https://github.com/jupyter/docker-stacks#jupyter-notebook-deprecation-notice."
-    # shellcheck disable=SC1091,SC2086
-    exec /usr/local/bin/start.sh ${wrapper} jupyter notebook ${NOTEBOOK_ARGS} "$@"
 fi
+
+# shellcheck disable=SC1091,SC2086
+exec /usr/local/bin/start.sh ${wrapper} jupyter ${JUPYTER_CMD} ${NOTEBOOK_ARGS} "$@"

base-notebook/test/test_container_options.py

@@ -23,8 +23,7 @@ def test_cli_args(container: TrackedContainer, http_client: requests.Session) ->
     warnings = [
         warning for warning in logs.split("\n") if warning.startswith("WARNING")
     ]
-    assert len(warnings) == 1
-    assert warnings[0].startswith("WARNING: Jupyter Notebook deprecation notice")
+    assert not warnings
     assert "login_submit" not in resp.text
 
 
@@ -49,8 +48,7 @@ def test_unsigned_ssl(
     warnings = [
         warning for warning in logs.split("\n") if warning.startswith("WARNING")
     ]
-    assert len(warnings) == 1
-    assert warnings[0].startswith("WARNING: Jupyter Notebook deprecation notice")
+    assert not warnings
 
 
 def test_uid_change(container: TrackedContainer) -> None:

base-notebook/test/test_start_container.py

@@ -11,17 +11,22 @@
 
 
 @pytest.mark.parametrize(
-    "env,expected_server",
+    "env,expected_server,expected_warning",
     [
-        (["JUPYTER_ENABLE_LAB=yes"], "lab"),
-        (None, "notebook"),
+        (["JUPYTER_ENABLE_LAB=yes"], "lab", True),
+        (None, "lab", False),
+        (["JUPYTER_CMD=lab"], "lab", False),
+        (["JUPYTER_CMD=notebook"], "notebook", False),
+        (["JUPYTER_CMD=server"], "server", False),
+        (["JUPYTER_CMD=nbclassic"], "nbclassic", False),
     ],
 )
 def test_start_notebook(
     container: TrackedContainer,
     http_client: requests.Session,
     env,
     expected_server: str,
+    expected_warning: bool,
 ) -> None:
     """Test the notebook start-notebook script"""
     LOGGER.info(
@@ -36,7 +41,7 @@ def test_start_notebook(
     logs = c.logs(stdout=True).decode("utf-8")
     LOGGER.debug(logs)
     assert "ERROR" not in logs
-    if expected_server != "notebook":
+    if not expected_warning:
         assert "WARNING" not in logs
     else:
         warnings = [
@@ -48,10 +53,6 @@ def test_start_notebook(
     assert (
         f"Executing the command: jupyter {expected_server}" in logs
     ), f"Not the expected command (jupyter {expected_server}) was launched"
-    # Checking warning messages
-    if not env:
-        msg = "WARNING: Jupyter Notebook deprecation notice"
-        assert msg in logs, f"Expected warning message {msg} not printed"
 
 
 def test_tini_entrypoint(