Update Dockerfile

Dockerfile

@@ -1,13 +1,12 @@
+# Use Ubuntu 22.04 for compatibility with pygobject and toga
 FROM ubuntu:22.04
 
+# Set environment variables
 ENV DEBIAN_FRONTEND=noninteractive
 ENV DISPLAY=:99
 ENV PATH="/home/user/.local/bin:$PATH"
 
-RUN useradd -m -u 1000 user
-USER user
-WORKDIR /app
-
+# Install system dependencies as root
 RUN apt-get update && apt-get install -y \
     python3 \
     python3-dev \
@@ -25,16 +24,26 @@ RUN apt-get update && apt-get install -y \
     websockify \
     && rm -rf /var/lib/apt/lists/*
 
+# Create a non-root user for Hugging Face Spaces
+RUN useradd -m -u 1000 user
+USER user
+WORKDIR /app
+
+# Copy application files
 COPY --chown=user . /app
 
+# Create and activate a virtual environment
 RUN python3 -m venv /venv
 ENV PATH="/venv/bin:$PATH"
 
+# Install Python dependencies
 RUN pip install --no-cache-dir --upgrade pip && \
     pip install flask pygobject toga
 
-EXPOSE 7860
+# Expose ports for Flask (7860) and noVNC (6080)
+EXPOSE 7860 6080
 
+# Start Xvfb, VNC server, noVNC, and Flask app
 CMD Xvfb :99 -screen 0 1024x768x16 & \
     x11vnc -display :99 -forever -nopw & \
     websockify --web /usr/share/novnc 6080 localhost:5900 & \