Simplify Dockerfile to fix 30+ minute build timeout issue

Co-authored-by: jongalloway <[email protected]>

Author: Copilot

deployment/docker/Dockerfile

@@ -1,62 +1,35 @@
 # Multi-stage Dockerfile for NLWebNet Demo Application
 # Based on .NET 9 runtime and optimized for production deployment
 
-# Multi-stage Dockerfile for NLWebNet Demo Application
-# Optimized for production deployment with SSL workarounds
-
 # Build stage
 FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
 WORKDIR /src
 
-# Install necessary certificates and tools
-RUN apt-get update && \
-    apt-get install -y ca-certificates curl && \
-    update-ca-certificates && \
-    rm -rf /var/lib/apt/lists/*
-
-# Set environment variables for .NET in containerized environments
-ENV DOTNET_SYSTEM_NET_HTTP_USESOCKETSHTTPHANDLER=0
-ENV NUGET_XMLDOC_MODE=skip
-ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=1
-ENV DOTNET_EnableWriteXorExecute=0
+# Set essential environment variables for .NET in containerized environments
 ENV DOTNET_SKIP_FIRST_TIME_EXPERIENCE=true
 ENV DOTNET_CLI_TELEMETRY_OPTOUT=true
+ENV NUGET_XMLDOC_MODE=skip
 
-# Copy project files first
+# Copy solution file and project files for dependency resolution
 COPY ["NLWebNet.sln", "./"]
 COPY ["src/NLWebNet/NLWebNet.csproj", "src/NLWebNet/"]
 COPY ["samples/Demo/NLWebNet.Demo.csproj", "samples/Demo/"]
 COPY ["samples/AspireHost/NLWebNet.AspireHost.csproj", "samples/AspireHost/"]
 COPY ["tests/NLWebNet.Tests/NLWebNet.Tests.csproj", "tests/NLWebNet.Tests/"]
-COPY ["NuGet.Config", "./"]
-
-# Attempt package restore with multiple fallback strategies
-# This addresses the SSL certificate validation issues common in Docker environments
-RUN echo "=== Attempting NuGet package restore ===" && \
-    echo "Strategy 1: Standard restore with timeout" && \
-    (timeout 45 dotnet restore "samples/Demo/NLWebNet.Demo.csproj" --verbosity minimal) || \
-    (echo "Strategy 2: Restore with --disable-parallel" && \
-     timeout 45 dotnet restore "samples/Demo/NLWebNet.Demo.csproj" --verbosity minimal --disable-parallel) || \
-    (echo "Strategy 3: Clear cache and retry with ignore-failed-sources" && \
-     dotnet nuget locals all --clear && \
-     timeout 45 dotnet restore "samples/Demo/NLWebNet.Demo.csproj" --verbosity minimal --ignore-failed-sources) || \
-    echo "All restore strategies failed due to SSL issues - will attempt build anyway"
-
-# Copy all source code
+
+# Restore dependencies
+RUN dotnet restore "samples/Demo/NLWebNet.Demo.csproj"
+
+# Copy source code
 COPY . .
 
-# Build and publish with fallback strategies
-# If restore failed, the build will automatically restore what it can
-RUN cd samples/Demo && \
-    echo "=== Building NLWebNet Demo Application ===" && \
-    (echo "Attempting build with --no-restore..." && \
-     dotnet build "NLWebNet.Demo.csproj" -c Release --no-restore --verbosity minimal) || \
-    (echo "Build without restore failed, attempting with restore and short timeout..." && \
-     timeout 60 dotnet build "NLWebNet.Demo.csproj" -c Release --verbosity minimal) || \
-    (echo "Standard build failed, trying with ignore-failed-sources..." && \
-     timeout 60 dotnet build "NLWebNet.Demo.csproj" -c Release --verbosity minimal -p:RestoreIgnoreFailedSources=true) && \
-    echo "=== Publishing application ===" && \
-    dotnet publish "NLWebNet.Demo.csproj" -c Release --no-build -o /app/publish /p:UseAppHost=false
+# Build the demo application
+WORKDIR "/src/samples/Demo"
+RUN dotnet build "NLWebNet.Demo.csproj" -c Release -o /app/build
+
+# Publish stage
+FROM build AS publish
+RUN dotnet publish "NLWebNet.Demo.csproj" -c Release -o /app/publish /p:UseAppHost=false
 
 # Runtime stage
 FROM mcr.microsoft.com/dotnet/aspnet:9.0 AS final
@@ -69,7 +42,7 @@ RUN apt-get update && apt-get install -y curl && rm -rf /var/lib/apt/lists/* \
 WORKDIR /app
 
 # Copy published application
-COPY --from=build /app/publish .
+COPY --from=publish /app/publish .
 
 # Create directory for logs and ensure proper permissions
 RUN mkdir -p /app/logs && chown -R nlwebnet:nlwebnet /app