Added initial dockerfile

Dockerfile

@@ -0,0 +1,35 @@
+FROM python:3.12-slim
+
+# Set working directory
+WORKDIR /app
+
+# Install minimal build tools
+RUN apt-get update && apt-get install -y \
+        build-essential \
+        git \
+        wget \
+        ca-certificates \
+        && update-ca-certificates \
+        && rm -rf /var/lib/apt/lists/*
+
+# Upgrade pip and install prebuilt PyTorch wheel first
+RUN pip install --upgrade pip
+
+# Install PyTorch CPU first (prebuilt wheel speeds up sentence-transformers)
+RUN pip install torch --index-url https://download.pytorch.org/whl/cpu
+
+# Copy pyproject.toml and install other dependencies
+COPY pyproject.toml .
+RUN pip install --no-cache-dir --prefer-binary .
+
+# Copy files needed
+COPY app.css app.py rag_filters.py rag_pipeline.py ./
+COPY data ./data
+
+# Expose Gradio port
+EXPOSE 7860
+
+ENV PYTHONUNBUFFERED=1
+
+# Run app
+CMD ["python3", "-u", "app.py"]