Trying to get this right.

.github/workflows/classroom.yaml

@@ -0,0 +1,47 @@
+name: Autograding Tests
+'on':
+- push
+- workflow_dispatch
+- repository_dispatch
+permissions:
+  checks: write
+  actions: read
+  contents: read
+jobs:
+  run-autograding-tests:
+    runs-on: ubuntu-latest
+    if: github.actor != 'github-classroom[bot]'
+    steps:
+    - name: Checkout default branch
+      uses: actions/checkout@v2
+      with:
+        ref: 'main'
+    - name: my test 1
+      id: my-test-1
+      uses: education/autograding-command-grader@v1
+      with:
+        test-name: my test 1
+        setup-command: sudo -H pip3 install pytest
+        command: pytest main_test.py
+        timeout: 10
+        max-score: 5
+    - name: Checkout dev branch
+      uses: actions/checkout@v2
+      with:
+        ref: 'dev'
+    - name: dev test
+      id: dev-test
+      uses: education/autograding-command-grader@v1
+      with:
+        test-name: dev test
+        setup-command: sudo -H pip3 install pytest
+        command: pytest dev_test.py
+        timeout: 10
+        max-score: 5
+    - name: Autograding Reporter
+      uses: education/autograding-grading-reporter@v1
+      env:
+        MY-TEST-1_RESULTS: "${{steps.my-test-1.outputs.result}}"
+        DEV-TEST_RESULTS: "${{steps.dev-test.outputs.result}}"
+      with:
+        runners: my-test-1,dev-test