Download and append to artifact

Author: flufflycthu1u

.github/workflows/vartest.yml

@@ -15,10 +15,17 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
+      - name: Download test artifact
+        uses: action/download-artifact@v8
+        with:
+          name: my-artifact
+          path: my_file.txt
+      - name: Display structure of downloaded files
+        run: ls -R
       - name: Create test file
-        run: echo "Hello world" > my_file.txt
+        run: echo "Hello world" >> my_file.txt
       - name: Upload test artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: my-artifact
           path: my_file.txt