updated github actions workflow

.github/workflows/build-validation.yml

@@ -15,6 +15,9 @@ jobs:
       - name: Checkout Repository
         uses: actions/checkout@v2
 
+      - name: Get Variables
+        run: echo "TAG_NAME=commit-$(git rev-parse --short HEAD)" >> $GITHUB_ENV
+
       - name: Update packages
         run: apt update && apt upgrade -y
 
@@ -45,6 +48,7 @@ jobs:
         with:
           name: stort-appimage.zip
           path: ./src-tauri/target/release/bundle/appimage/*.AppImage
+          retention-days: 7
 
       - name: Create Release
         id: create_release