Add stage 2 alpha release workflow

Author: brophdawg11

.github/workflows/release-stage-2-alpha.yml

@@ -1,15 +1,73 @@
-name: 🧪 Test Workflow for PR Label
+name: 🧪 Stage 2 (Alpha) Release
 
 on:
   pull_request:
     types: [labeled]
 
+concurrency: ${{ github.workflow }}-${{ github.ref }}
+
+env:
+  CI: true
+
 jobs:
-  test:
-    name: Test
+  alpha:
+    name: 🧪 Alpha Release
+    if: github.repository == 'remix-run/react-router' && github.event.label.name == 'alpha-release'
     runs-on: ubuntu-latest
     steps:
-      - name: Log
+      - name: Log Event Info
         run: |
           echo "Label: ${{ github.event.label.name }}"
           echo "Branch: ${{ github.event.pull_request.head.ref }}"
+          echo "SHA: ${{ github.event.pull_request.head.sha }}"
+
+      - name: ⬇️ Checkout repo
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Log Git Info
+        run: |
+          git log -n 1
+          git status
+
+      - name: 📦 Setup pnpm
+        uses: pnpm/action-setup@v4
+
+      - name: ⎔ Setup node
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: ".nvmrc"
+          cache: "pnpm"
+
+      - name: 📥 Install deps
+        run: pnpm install --frozen-lockfile
+
+      - name: ⤴️ Update version
+        id: version
+        run: |
+          SHORT_SHA=$(git rev-parse --short HEAD)
+          NEXT_VERSION=0.0.0-alpha-${SHORT_SHA}
+          git checkout -b alpha/${NEXT_VERSION}
+          pnpm run version ${NEXT_VERSION}
+          echo "version=${NEXT_VERSION}" >> "$GITHUB_OUTPUT"
+
+      - name: 🏗 Build
+        run: pnpm build
+
+      - name: Check
+        run: |
+          echo "Version: ${{ steps.version.outputs.version }}"
+          git status
+          cat packages/react-router/package.json
+          cat packages/react-router-dev/package.json
+          ls packages/react-router/dist
+          ls packages/react-router-dev/dist
+
+      # - name: 🔐 Setup npm auth
+      #   run: |
+      #     echo "registry=https://registry.npmjs.org" >> ~/.npmrc
+      #     echo "//registry.npmjs.org/:_authToken=${{ secrets.NPM_TOKEN }}" >> ~/.npmrc
+
+      # - name: 🚀 Publish
+      #   run: pnpm run publish