Add Dockerfile for Hugging Face Spaces

Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    libgl1-mesa-glx \
+    libglib2.0-0 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements first for caching
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy app files
+COPY server.py .
+COPY watermark_remover.py .
+COPY static/ static/
+
+# Create work directories
+RUN mkdir -p work outputs
+
+# Expose port
+EXPOSE 7860
+
+# Run the app
+CMD ["uvicorn", "server:app", "--host", "0.0.0.0", "--port", "7860"]