Added JupyterLab one-click-app configuration (#190)

public/v2/apps/jupyter-lab.json

@@ -0,0 +1,39 @@
+{
+    "captainVersion": "2",
+    "documentation": "Read more at: https://jupyter-docker-stacks.readthedocs.io/",
+    "displayName": "JupyterLab",
+    "description": "JupyterLab is the next-generation user interface for Project Jupyter. It offers all the familiar building blocks of the classic Jupyter Notebook (notebook, terminal, text editor, file browser, rich outputs, etc.) in a flexible and powerful user interface.",
+    "dockerCompose": {
+        "version": "3.3",
+        "services": {
+            "$$cap_appname": {
+                "containerHttpPort": "8888",
+                "dockerfileLines": [
+                    "FROM jupyter/datascience-notebook:9f9e5ca8fe5a",
+                    "RUN pip install lxml",
+                    "RUN jupyter notebook --generate-config",
+                    "RUN echo 'c.NotebookApp.token = \"$$cap_jupyter_default_token\"' >> /home/jovyan/.jupyter/jupyter_notebook_config.py",
+                    "EXPOSE 8888"
+                ],
+                "restart": "always",
+                "environment": {
+                    "JUPYTER_ENABLE_LAB": "yes"
+                },
+                "volumes":[
+                   "$$cap_appname:/home/jovyan/"
+                ]
+            }
+        }
+    },
+    "instructions": {
+        "start": "JupyterLab is the next-generation user interface for Project Jupyter.",
+        "end": "JupyterLab server is deployed and is available as $$cap_appname.\n\n IMPORTANT: Make sure to enable websocket capability in the app config on CapRover dashboard!"
+    },
+    "variables": [
+        {
+            "id": "$$cap_jupyter_default_token",
+            "label": "Jupyter default token",
+            "description": "The default login token allows you to set a password within the application. For better experience leave empty and enable basic auth within the CaprRover dashboard."
+        }
+    ]
+}