docker for chatbot

(cherry picked from commit 8523f066d3a49c605da3a187af8c21da88619929)

Dockerfile

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+# Step 1: Choose a base Python image
+FROM python:3.10-slim
+
+# Step 2: Set a working directory
+WORKDIR /home/user/app
+
+# Step 3: Copy all your code into the container
+COPY . /home/user/app
+
+# Step 4: Install dependencies
+#         - If you rely on pyproject.toml (poetry or setuptools):
+RUN pip install --no-cache-dir .
+
+# Step 5: Expose a port (optional, helps clarity, though HF Spaces auto-detects)
+EXPOSE 7860
+
+# Step 6: Command to run your Gradio app (or any Python script)
+CMD ["python", "app.py"]