Add workflow steps for building

.github/workflows/release.yml

@@ -15,17 +15,27 @@ jobs:
     name: Test action
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         name: Checkout code
 
+      - name: Run build
+        run: npm run build
+
+      - name: Ensure no pending Git changes
+        run: |
+          if [[ -n $(git status --porcelain) ]]; then
+            echo "There are pending Git changes after running the build. Did you forget to commit the .js files?"
+            exit 1
+          fi
+
       - name: Run tests
         run: npm run test
 
-      - uses: pCYSl5EDgo/[email protected]
-        name: Cat for GitHub Actions
+      - name: Load test key
         id: get_key
-        with:
-          path: __tests__/test_key_b64.txt
+        run: |
+          value=$(cat __tests__/test_key_b64.txt)
+          echo "text=$value" >> $GITHUB_OUTPUT
 
       - uses: ./
         name: zipalign and Sign APK