Rename dockerfile to Dockerfile for Hugging Face Space compatibility

dockerfile

@@ -1,26 +0,0 @@
-FROM python:3.10-slim
-
-WORKDIR /app
-
-# Install system dependencies
-RUN apt-get update && apt-get install -y \
-    build-essential \
-    && rm -rf /var/lib/apt/lists/*
-
-# Copy requirements first for better caching
-COPY requirements.txt .
-RUN pip install --no-cache-dir -r requirements.txt
-
-# Copy application files
-COPY app.py .
-COPY .env .
-
-# Initialize api_keys.json if it doesn't exist
-RUN if [ ! -f api_keys.json ]; then echo "{}" > api_keys.json; fi
-RUN chmod 666 api_keys.json
-
-# Standard Hugging Face Space port
-EXPOSE 7860
-
-# Run the Flask app
-CMD ["python", "app.py"]