test the github actions to add a binder badge

.github/workflows/binder-badge.yml

@@ -4,30 +4,41 @@ name: AddBinderBadge
 on:
   push:
   pull_request_target:
-    # since we're using nbgitpuller, only create the badge when PR opened
     types: [opened]
-    paths:
-      - 'examples/*'
+
 jobs:
   add-badge:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
-    - name: Checkout PR
-      uses: actions/checkout@v2
+    # - name: Checkout PR
+    #   uses: actions/checkout@v2
+    # - name: print vars
+    #   run: |
+    #     echo ${{ github.head_ref}}
+    #     echo ${{ github.ref}}
+    #     echo ${{ github.base_ref}}
+    #     echo ${GITHUB_REF#refs/heads/}
+    # - name: get branch name
+    #   run: |
+    #     echo ${GITHUB_REF#refs/heads/}
+    #     export GIT_BRANCH=$(echo ${GITHUB_REF#refs/heads/})
+    #     echo $GIT_BRANCH
 
     - name: Comment on PR with Binder link
       uses: actions/github-script@v5
-      env:
-        BRANCH_NAME: ${{ github.event.pull_request.head.ref }}
-        CONTENT_REPO: ${{github.event.pull_request.head.repo.full_name}}
       with:
         github-token: ${{secrets.GITHUB_TOKEN}}
         script: |
-          var BRANCH_NAME = process.env.BRANCH_NAME;
+          console.log(context)
+          var BRANCH_NAME = process.env.GITHUB_REF.replace("refs/heads", "");
           var CONTENT_REPO = process.env.CONTENT_REPO;
           github.rest.issues.createComment({
-            issue_number: context.issue.number,
+            issue_number: context.payload.issue.number,
             owner: context.repo.owner,
             repo: context.repo.repo,
-            body: `[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/icesat2py/icepyx/main?urlpath=git-pull%3Frepo%3Dhttps%253A%252F%252Fgithub.com%252F${CONTENT_REPO}%26urlpath%3Dlab%252Ftree%252Ficepyx%252Fexamples%252F%26branch%3D${BRANCH_NAME}) :point_left: Launch a binder notebook on this branch`
-          })
+            body: `[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/${CONTENT_REPO}/${BRANCH_NAME}?labpath=examples) :point_left: Launch a binder notebook on this branch`
+          })
+      # NOTE: Setting the vars as env vars is required to make them available within the Comment on PR step
+      env:
+        GITHUB_REF: ${{ github.ref }}
+        CONTENT_REPO: ${{ github.repository }}