Initial commit

.github/workflows/2-commit-a-file.yml

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+name: Step 2, Commit a file
+
+# This step listens for the learner to commit a file to branch `my-first-branch`.
+# This workflow updates from step 2 to step 3.
+
+# This action will run every time there's a push to `my-first-branch`.
+# Reference: https://docs.github.com/en/actions/learn-github-actions/events-that-trigger-workflows
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - my-first-branch
+
+# Reference: https://docs.github.com/en/actions/security-guides/automatic-token-authentication
+permissions:
+  # Need `contents: read` to checkout the repository.
+  # Need `contents: write` to update the step metadata.
+  contents: write
+
+jobs:
+  # Get the current step to only run the main job when the learner is on the same step.
+  get_current_step:
+    name: Check current step number
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - id: get_step
+        run: |
+          echo "current_step=$(cat ./.github/steps/-step.txt)" >> $GITHUB_OUTPUT
+    outputs:
+      current_step: ${{ steps.get_step.outputs.current_step }}
+
+  on_commit_a_file:
+    name: On commit a file
+    needs: get_current_step
+
+    # We will only run this action when:
+    # 1. This repository isn't the template repository.
+    # 2. The step is currently 2.
+    # Reference: https://docs.github.com/en/actions/learn-github-actions/contexts
+    # Reference: https://docs.github.com/en/actions/learn-github-actions/expressions
+    if: >-
+      ${{ !github.event.repository.is_template
+          && needs.get_current_step.outputs.current_step == 2 }}
+
+    # We'll run Ubuntu for performance instead of Mac or Windows.
+    runs-on: ubuntu-latest
+
+    steps:
+      # We'll need to check out the repository so that we can edit the README.
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0 # Let's get all the branches.
+
+      # In README.md, switch step 2 for step 3.
+      - name: Update to step 3
+        uses: skills/action-update-step@v2
+        with:
+          token: ${{ secrets.GLOBAL_CLASSROOM_ORG_TOKEN }}
+          from_step: 2
+          to_step: 3
+          branch_name: my-first-branch