Refactor Azure CI/CD workflow for job-helper-app

Updated working directory paths and artifact upload location.

Author: roman-dotsenko

.github/workflows/api_job-helper-app.yml

@@ -25,17 +25,17 @@ jobs:
 
       - name: Build with dotnet
         run: dotnet build --configuration Release
-        working-directory: ./backend
+        working-directory: ./backend/JobHelper.csproj
 
       - name: dotnet publish
         run: dotnet publish -c Release -o ${{github.workspace}}/myapp
-        working-directory: ./backend
+        working-directory: ./backend/JobHelper.csproj
 
       - name: Upload artifact for deployment job
         uses: actions/upload-artifact@v4
         with:
           name: .net-app
-          path: ${{github.workspace}}/myapp
+          path: ${{env.DOTNET_ROOT}}/myapp
 
   deploy:
     runs-on: windows-latest
@@ -65,3 +65,4 @@ jobs:
           slot-name: 'Production'
           package: .
 
+