Bu9ild path fixes

DiunaBI.UI.Web/Dockerfile

@@ -1,6 +1,6 @@
 # Stage 1: Build
 FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
-WORKDIR /src/Backend
+WORKDIR /
 
 # Copy solution and all project files for restore
 COPY DiunaBI.sln ./
@@ -16,7 +16,7 @@ RUN dotnet restore DiunaBI.UI.Web/DiunaBI.UI.Web.csproj
 COPY . .
 
 # Build and publish
-WORKDIR /src/Backend/DiunaBI.UI.Web
+WORKDIR /DiunaBI.UI.Web
 RUN dotnet publish -c Release -o /app/publish --no-restore
 
 # Stage 2: Runtime