add runnable notebook

Change-Id: If2f5a649f47f364400e5a4a49516afeb20a51c7f

.github/workflows/docs.yml

@@ -30,8 +30,11 @@ jobs:
       - name: run Notebooks
         run: |
           cd djl_tmp/jupyter
-          rm -rf d2l-java
           bash test_notebook.sh
+      - name: add mybinder link
+        run: |
+          cd djl_tmp
+          python3 tools/scripts/add_online_runner.py
       - name: build docs
         run: |
           cd djl_tmp/docs

apt.txt

@@ -0,0 +1 @@
+openjdk-11-jdk

jupyter/README.md

@@ -14,6 +14,8 @@ This folder contains tutorials that illustrate how to accomplish basic AI tasks
 - [Transfer learning example](transfer_learning_on_cifar10.ipynb)
 - [Question answering example](BERTQA.ipynb)
 
+You can run our notebook online: [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/awslabs/djl/master?filepath=jupyter)
+
 ## Setup
 
 ### JDK 11 (not jre)

postBuild

@@ -0,0 +1,5 @@
+git clone https://github.com/frankfliu/IJava.git
+cd IJava/
+./gradlew installKernel
+cd ..
+rm -rf Ijava/ ~/.gradle

tools/scripts/add_online_runner.py

@@ -0,0 +1,13 @@
+from pathlib import Path
+import glob, json
+
+constructor = {"cell_type": "markdown", "metadata": {}}
+prefix = "Run this notebook online:[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/awslabs/djl/master?filepath="
+
+for file in Path('.').glob('**/*.ipynb'):
+    with open(file, mode= "r", encoding= "utf-8") as f:
+        data = json.loads(f.read())
+    with open(file, 'w') as writer:
+        constructor["source"] = [prefix + str(file) + ")"]
+        data["cells"].insert(0, constructor)
+        writer.write(json.dumps(data))