Add project files.

Dockerfile

@@ -0,0 +1,32 @@
+# Stage 1: Runtime
+FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS base
+WORKDIR /app
+EXPOSE 8080
+
+# Stage 2: Build
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+WORKDIR /src
+
+# Copy both .csproj files to restore dependencies first (better for Docker caching)
+COPY ["paperless-ngx-export.service/paperless-ngx-export.service.csproj", "paperless-ngx-export.service/"]
+COPY ["paperless-ngx-export/paperless-ngx-export.csproj", "paperless-ngx-export/"]
+
+# Restore only the entry point project (it will automatically restore the dependency)
+RUN dotnet restore "paperless-ngx-export.service/paperless-ngx-export.service.csproj"
+
+# Copy the rest of the source code for both projects
+COPY . .
+
+# Build the service
+WORKDIR "/src/paperless-ngx-export.service"
+RUN dotnet build "paperless-ngx-export.service.csproj" -c Release -o /app/build
+
+# Stage 3: Publish
+FROM build AS publish
+RUN dotnet publish "paperless-ngx-export.service.csproj" -c Release -o /app/publish /p:UseAppHost=false
+
+# Stage 4: Final Image
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "paperless-ngx-export.service.dll"]