Update Dockerfile to build and publish ALL extensions

Co-authored-by: markjbrown <800166+markjbrown@users.noreply.github.com>

Author: Copilot

Dockerfile

@@ -11,7 +11,7 @@ COPY ["Extensions/", "Extensions/"]
 
 # Restore dependencies
 # Increase the timeout and number of retries for NuGet
-RUN dotnet nuget add source https://api.nuget.org/v3/index.json --name nuget.org
+RUN dotnet nuget list source | grep -q 'nuget.org' || dotnet nuget add source https://api.nuget.org/v3/index.json --name nuget.org
 ENV NUGET_PACKAGES=/nuget-packages
 ENV NUGET_HTTP_CACHE_PATH=/nuget-http-cache
 RUN mkdir -p /nuget-packages /nuget-http-cache
@@ -21,11 +21,8 @@ RUN dotnet restore "Core/Cosmos.DataTransfer.Core/Cosmos.DataTransfer.Core.cspro
 RUN dotnet build "Core/Cosmos.DataTransfer.Core/Cosmos.DataTransfer.Core.csproj" -c Release -o /app/build/Core --no-restore
 RUN dotnet publish "Core/Cosmos.DataTransfer.Core/Cosmos.DataTransfer.Core.csproj" -c Release -o /app/publish/Core --no-restore
 
-# Build and publish all standard extensions
-RUN dotnet publish "Extensions/Json/Cosmos.DataTransfer.JsonExtension/Cosmos.DataTransfer.JsonExtension.csproj" -c Release -o /app/publish/Core/Extensions || echo "Skipping Json extension"
-RUN dotnet publish "Extensions/Cosmos/Cosmos.DataTransfer.CosmosExtension/Cosmos.DataTransfer.CosmosExtension.csproj" -c Release -o /app/publish/Core/Extensions || echo "Skipping Cosmos extension"
-RUN dotnet publish "Extensions/Csv/Cosmos.DataTransfer.CsvExtension/Cosmos.DataTransfer.CsvExtension.csproj" -c Release -o /app/publish/Core/Extensions || echo "Skipping CSV extension"
-RUN dotnet publish "Extensions/SqlServer/Cosmos.DataTransfer.SqlServerExtension/Cosmos.DataTransfer.SqlServerExtension.csproj" -c Release -o /app/publish/Core/Extensions || echo "Skipping SqlServer extension"
+# Build and publish ALL extensions
+RUN find Extensions -name "*.csproj" | grep -v "UnitTests" | xargs -I {} sh -c 'dotnet publish "{}" -c Release -o /app/publish/Core/Extensions || echo "Skipping $(basename $(dirname {}))"'
 
 # Runtime stage
 FROM mcr.microsoft.com/dotnet/runtime:8.0 AS runtime