Move Dockerfile & NuGet.config to WebApi directory, update workflow

.gitea/workflows/kub-deploy.yml

@@ -55,6 +55,7 @@ jobs:
 
       - name: Build Docker Image
         run: |
+          cd src/BackOffice.BFF.WebApi
           docker build -t ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.sha }} \
                        -t ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest \
                        --build-arg HTTP_PROXY=http://proxyuser:87zH26nbqT2@46.249.98.211:3128 \