feat: complete release preparation, 10+ ad mediation, CI/CD, and docker deployment

apps/api-server/Dockerfile

@@ -0,0 +1,27 @@
+# Multi-stage Docker build for D3RO Voice C# .NET API Backend & BackOffice
+FROM mcr.microsoft.com/dotnet/sdk:10.0-preview AS build
+WORKDIR /src
+
+COPY D3ROVoice.Api.csproj ./
+RUN dotnet restore
+
+COPY . ./
+RUN dotnet publish -c Release -o /app/out
+
+FROM mcr.microsoft.com/dotnet/aspnet:10.0-preview AS runtime
+WORKDIR /app
+
+# Create persistent storage directory for SQLite database
+RUN mkdir -p /app/data
+
+COPY --from=build /app/out ./
+
+EXPOSE 5000
+ENV ASPNETCORE_URLS=http://+:5000
+ENV ASPNETCORE_ENVIRONMENT=Production
+ENV DATA_DIR=/app/data
+
+VOLUME ["/app/data"]
+
+ENTRYPOINT ["dotnet", "D3ROVoice.Api.dll"]
+