Add Dockerfile for Hugging Face Spaces

Dockerfile

@@ -0,0 +1,22 @@
+FROM python:3.11-slim
+
+WORKDIR /code
+
+# Install build dependencies
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy only pyproject.toml first to leverage Docker cache
+COPY pyproject.toml .
+
+# Install project and dependencies
+RUN pip install .
+
+# Copy the rest of the application
+COPY . .
+
+# Expose port 7860 for Hugging Face Spaces
+EXPOSE 7860
+
+CMD ["python", "-c", "import cadviewer; from nicegui import app; app.native.start_args['port'] = 7860; cadviewer.ui.run(native=False, host='0.0.0.0', port=7860)"]