Create BinderHub.yml

Create a BinderHub action workflow that creates a docker container for Binder operation

.github/workflows/BinderHub.yml

@@ -0,0 +1,19 @@
+name: BinderHub docker repo
+on: workflow_dispatch
+
+jobs:
+  binder:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout Code
+      uses: actions/checkout@v2
+      with:
+        ref: ${{ github.event.pull_request.head.sha }}
+
+    - name: update jupyter dependencies with repo2docker
+      uses: jupyterhub/repo2docker-action@master
+      with:
+        DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+        DOCKER_PASSWORD: ${{ secrets.DOCKER_API_TOKEN }}
+        BINDER_CACHE: true
+        PUBLIC_REGISTRY_CHECK: true