Enhance Dockerfile and README for Wine + .NET SDK setup

- Updated Dockerfile to include necessary X11 packages for Wine.
- Improved initialization of Wine prefix with virtual display.
- Modified .NET installation to utilize virtual display.
- Updated README to reflect changes in usage instructions and removed PowerShell build instructions.

Dockerfile

@@ -4,7 +4,7 @@ FROM ubuntu:22.04
 # Avoid interactive prompts during installation
 ENV DEBIAN_FRONTEND=noninteractive
 
-# Update system and install necessary packages
+# Update system and install necessary packages including X11 for Wine
 RUN apt-get update && apt-get install -y \
     software-properties-common \
     wget \
@@ -12,6 +12,10 @@ RUN apt-get update && apt-get install -y \
     gnupg2 \
     ca-certificates \
     apt-transport-https \
+    xvfb \
+    x11-utils \
+    x11-xserver-utils \
+    dbus-x11 \
     && rm -rf /var/lib/apt/lists/*
 
 # Add Wine repository and install Wine 64-bit
@@ -28,25 +32,41 @@ RUN useradd -m -s /bin/bash wineuser
 USER wineuser
 WORKDIR /home/wineuser
 
-# Initialize Wine prefix
-RUN winecfg /v
-
 # Set Wine to 64-bit mode
 ENV WINEARCH=win64
 ENV WINEPREFIX=/home/wineuser/.wine
+ENV DISPLAY=:99
 
-# Download and install .NET SDK
+# Initialize Wine prefix with virtual display
+RUN Xvfb :99 -screen 0 1024x768x16 & \
+    sleep 2 && \
+    winecfg -v && \
+    pkill Xvfb
+
+# Download and install .NET SDK with virtual display
 RUN cd /tmp \
     && wget https://builds.dotnet.microsoft.com/dotnet/Sdk/9.0.301/dotnet-sdk-9.0.301-win-x64.exe \
-    && wine dotnet-sdk-9.0.301-win-x64.exe /quiet /install \
+    && Xvfb :99 -screen 0 1024x768x16 & \
+    && sleep 2 \
+    && wine dotnet-sdk-9.0.301-win-x64.exe /S /v/qn \
+    && pkill Xvfb \
     && rm dotnet-sdk-9.0.301-win-x64.exe
 
 # Set environment variables for .NET
 ENV DOTNET_ROOT="$WINEPREFIX/drive_c/Program Files/dotnet"
 ENV PATH="$DOTNET_ROOT:$PATH"
 
+# Create a script to run .NET commands with virtual display
+RUN echo '#!/bin/bash' > /home/wineuser/run-dotnet.sh \
+    && echo 'Xvfb :99 -screen 0 1024x768x16 & XVFB_PID=$!' >> /home/wineuser/run-dotnet.sh \
+    && echo 'sleep 2' >> /home/wineuser/run-dotnet.sh \
+    && echo 'export DISPLAY=:99' >> /home/wineuser/run-dotnet.sh \
+    && echo 'wine dotnet "$@"' >> /home/wineuser/run-dotnet.sh \
+    && echo 'kill $XVFB_PID' >> /home/wineuser/run-dotnet.sh \
+    && chmod +x /home/wineuser/run-dotnet.sh
+
 # Verify installation
-RUN wine dotnet --version
+RUN /home/wineuser/run-dotnet.sh --version
 
 # Set working directory for projects
 WORKDIR /home/wineuser/projects