echo github context using python

.github/workflows/build.yml

@@ -6,10 +6,10 @@ jobs:
   test:
     runs-on: ubuntu-16.04
     steps:
-    # - name: Dump GitHub context
-    #   env:
-    #     GITHUB_CONTEXT: ${{ toJson(github) }}
-    #   run: echo "$GITHUB_CONTEXT"
+    - name: Dump GitHub context
+      env:
+        GITHUB_CONTEXT: ${{ toJson(github) }}
+      run: python -c "import os; print os.environ['GITHUB_CONTEXT']"
     - name: Fail if not a release publish # workaround has `on` doesn't have this filter
       run: exit 1
       if: github.event_name == 'release' && (github.event.action != 'published' && github.event.action != 'rerequested')